3029:
1275:
396:
1059:
4258:
2339:
3011:
1905:. Brackets, like parentheses, behave in chemistry as they do in mathematics, grouping terms together – they are not specifically employed only for ionization states. In the latter case here, the parentheses indicate 6 groups all of the same shape, bonded to another group of size 1 (the cobalt atom), and then the entire bundle, as a group, is bonded to 3 chlorine atoms. In the former case, it is clearer that the bond connecting the chlorines is
4222:
1999:
38:
3020:
2591:
4246:
1098:
219:
4234:
578:, it often cannot be as informative as a true structural formula, which is a graphical representation of the spatial relationship between atoms in chemical compounds (see for example the figure for butane structural and chemical formulae, at right). For reasons of structural complexity, a single condensed chemical formula (or semi-structural formula) may correspond to different molecules, known as
873:)-2,3,4,5,6-pentahydroxyhexanal. This name, interpreted by the rules behind it, fully specifies glucose's structural formula, but the name is not a chemical formula as usually understood, and uses terms and words not used in chemical formulae. Such names, unlike basic formulae, may be able to represent full structural formulae without graphs.
1270:{\displaystyle {\ce {H-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-H}}}
391:{\displaystyle {\ce {H-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-{\overset {\displaystyle H \atop |}{\underset {| \atop \displaystyle H}{C}}}-H}}}
656:
and indicates the proportionate number of atoms of each element. In empirical formulae, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, by ratios to the key element. For molecular compounds, these ratio numbers can all be expressed as
1322:
Molecular formulae simply indicate the numbers of each type of atom in a molecule of a molecular substance. They are the same as empirical formulae for molecules that only have one atom of a particular type, but otherwise may have larger numbers. An example of the difference is the empirical formula
635:
and other chemical transformations, such as the dissolving of ionic compounds into solution. While, as noted, chemical formulae do not have the full power of structural formulae to show chemical relationships between atoms, they are sufficient to keep track of numbers of atoms and numbers of
2253:
By sorting formulae according to the number of atoms of each element present in the formula according to these rules, with differences in earlier elements or numbers being treated as more significant than differences in any later element or number—like sorting text strings into
2276:
A list of formulae in Hill system order is arranged alphabetically, as above, with single-letter elements coming before two-letter symbols when the symbols begin with the same letter (so "B" comes before "Be", which comes before "Br").
673:
because the molecules of ethanol all contain two carbon atoms, six hydrogen atoms, and one oxygen atom. Some types of ionic compounds, however, cannot be written with entirely whole-number empirical formulae. An example is
734:
For simple molecules, a condensed (or semi-structural) formula is a type of chemical formula that may fully imply a correct structural formula. For example, ethanol may be represented by the condensed chemical formula
1670:(SMILES) allows a more human-readable ASCII input. However, all these nomenclature systems go beyond the standards of chemical formulae, and technically are chemical naming systems, not formula systems.
567:. However, even a condensed chemical formula is necessarily limited in its ability to show complex bonding relationships between atoms, especially atoms that have bonds to four or more different
2460:
Chai, Yan; Guo, Ting; Jin, Changming; Haufler, Robert E.; Chibante, L. P. Felipe; Fure, Jan; Wang, Lihong; Alford, J. Michael; Smalley, Richard E. (1991). "Fullerenes wlth Metals Inside".
1631:
does not identify. The relative position of the two methyl groups must be indicated by additional notation denoting whether the methyl groups are on the same side of the double bond (
1416:
of a molecule often has a strong influence on its physical and chemical properties and behavior. Two molecules composed of the same numbers of the same types of atoms (i.e. a pair of
198:
539:, or various combinations of these types. This is possible if the relevant bonding is easy to show in one dimension. An example is the condensed molecular/chemical formula for
3571:
3341:
3301:
2793:
527:(or condensed molecular formula, occasionally called a "semi-structural formula"), which conveys additional information about the particular ways in which the atoms are
3502:
3477:
3467:
902:
of a chemical is a simple expression of the relative number of each type of atom or ratio of the elements in the compound. Empirical formulae are the standard for
2048:
regardless of whether M was inside the fullerene without chemical bonding or outside, bound to one of the carbon atoms. Using the @ symbol, this would be denoted
1443:
consists of two carbon atoms single-bonded to each other, with each carbon atom having three hydrogen atoms bonded to it. Its chemical formula can be rendered as
2223:(or Hill notation) is a system of writing empirical chemical formulae, molecular chemical formulae and components of a condensed formula such that the number of
624:), but such names must use many terms (words), rather than the simple element symbols, numbers, and simple typographical symbols that define a chemical formula.
1376:
In addition to indicating the number of atoms of each elementa molecule, a structural formula indicates how the atoms are organized, and shows (or implies) the
3873:
3201:
3142:
3050:
3962:
3778:
3713:
3653:
3581:
3487:
3381:
3251:
3206:
2877:
1469:, and the fact that there is a double bond between the carbons is implicit because carbon has a valence of four. However, a more explicit method is to write
4042:
3507:
3351:
3321:
1537:. This condensed structural formula implies a different connectivity from other molecules that can be formed using the same atoms in the same proportions (
2100:. The choice of the symbol has been explained by the authors as being concise, readily printed and transmitted electronically (the at sign is included in
3437:
3417:
3090:
1420:) might have completely different chemical and/or physical properties if the atoms are connected differently or in different positions. In such cases, a
3462:
2639:
3100:
2802:
1870:
This is strictly optional; a chemical formula is valid with or without ionization information, and
Hexamminecobalt(III) chloride may be written as
3457:
2786:
2266:
3127:
1424:
is useful, as it illustrates which atoms are bonded to which other ones. From the connectivity, it is often possible to deduce the approximate
1458:
there is a double bond between the carbon atoms (and thus each carbon only has two hydrogens), therefore the chemical formula may be written:
3673:
3070:
1038:
Like the other formula types detailed below, an empirical formula shows the number of elements in a molecule, and determines whether it is a
3221:
2377:
1667:
2104:, which most modern character encoding schemes are based on), and the visual aspects suggesting the structure of an endohedral fullerene.
3132:
853:
Chemical formulae as described here are distinct from the far more complex chemical systematic names that are used in various systems of
481:
indicate the simple numbers of each type of atom in a molecule, with no information on structure. For example, the empirical formula for
800:
ion. Each polyatomic ion in a compound is written individually in order to illustrate the separate groupings. For example, the compound
2779:
4000:
3316:
2270:
1659:
774:), but may be differentiated by the condensed formulae shown, which are sufficient to represent the full structure of these simple
1655:
1362:. A molecular formula provides more information about a molecule than its empirical formula, but is more difficult to establish.
731:. However, except for very simple substances, molecular chemical formulae lack needed structural information, and are ambiguous.
3532:
3291:
3211:
694:, chemical formulae often employ ways to suggest the structure of the molecule. These types of formulae are variously known as
640:
so that these equations can be used in chemical problems involving conservation of atoms, and conservation of electric charge.
105:
2632:
2557:
2411:
77:
3913:
1380:
between the atoms. There are multiple types of structural formulas focused on different aspects of the molecular structure.
704:. A molecular formula enumerates the number of atoms to reflect those in the molecule, so that the molecular formula for
2437:"LibGuides: CHE 120 - Introduction to Organic Chemistry - Textbook: Chapter 1 - Organic Chemistry Review / Hydrocarbons"
84:
4165:
2595:
4065:
2760:
1663:
124:
17:
1650:
As noted above, in order to represent the full structural formulae of many complex organic and inorganic compounds,
2625:
2273:
in 1900. It is the most commonly used system in chemical databases and printed indexes to sort lists of compounds.
850:
ions. In such cases, the condensed formula only need be complex enough to show at least one of each ionic species.
637:
91:
4190:
785:
that do not exist as discrete molecules, but nonetheless do contain covalently bound clusters within them. These
1705:, is a molecule with fifty repeating units. If the number of repeating units is unknown or variable, the letter
4288:
2489:"On a system of indexing chemical literature; Adopted by the Classification Division of the U.S. Patent Office"
62:
4115:
2357:
2161:
A chemical formula used for a series of compounds that differ from each other by a constant unit is called a
1818:
73:
4150:
1654:
may be needed which goes well beyond the available resources used above in simple condensed formulae. See
3346:
2250:. When the formula contains no carbon, all the elements, including hydrogen, are listed alphabetically.
2123:
2113:
1413:
140:
4283:
1510:), and if there may be ambiguity, a single line or pair of dots may be used to indicate a single bond.
1035:. This is also the molecular formula for formaldehyde, but acetic acid has double the number of atoms.
436:
symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and
4105:
4100:
3281:
2604:, from the University of Massachusetts Lowell libraries, including how to sort into Hill system order
2030:) indicates an atom or molecule trapped inside a cage but not chemically bound to it. For example, a
789:
are groups of atoms that are covalently bound together and have an overall ionic charge, such as the
445:
822:, but in liquid or solid forms, this compound is more correctly shown by an ionic condensed formula
4145:
2601:
1986:
for the most abundant isotopic species of dioxygen. This is convenient when writing equations for
4225:
1682:
in condensed chemical formulae, parentheses are placed around the repeating unit. For example, a
4080:
3045:
2955:
2832:
2827:
1937:
in a chemical formula. For example, the phosphate ion containing radioactive phosphorus-32 is
1933:
chemistry than to conventional chemistry, different isotopes may be indicated with a prefixed
98:
4135:
4110:
3748:
3366:
2913:
2255:
1742:, the charge on a particular atom may be denoted with a right-hand superscript. For example,
1651:
1611:
854:
621:
449:
2280:
The following example formulae are written using the Hill system, and listed in Hill order:
1431:
A condensed (or semi-structural) formula may represent the types and spatial arrangement of
936:
used to determine the relative percent composition of a pure chemical substance by element.
4196:
4180:
3805:
3176:
3147:
3028:
2852:
2724:
2079:
2031:
2021:
1853:
1798:
933:
460:. Chemical formulae can fully specify the structure of only the simplest of molecules and
452:
since it does not contain any words. Although a chemical formula may imply certain simple
58:
8:
4140:
4120:
3933:
3623:
3111:
2975:
2950:
2918:
2837:
2729:
1047:
801:
444:(−) signs. These are limited to a single typographic line of symbols, which may include
4238:
4160:
4130:
4075:
3952:
3928:
3427:
3361:
3226:
3186:
3037:
3000:
2960:
2939:
2882:
2857:
2684:
2243:
1425:
1421:
1371:
929:
700:
464:, and are generally more limited in power than chemical names and structural formulae.
461:
457:
453:
403:
2126:, that cannot be represented by small integers. Such a formula might be written using
4293:
4185:
3768:
3668:
3638:
3556:
3296:
3181:
3137:
3085:
2892:
2887:
2819:
2697:
2674:
2669:
2571:
2563:
2553:
2544:
2493:
2417:
2407:
2166:
1926:
1407:
1384:
1001:
899:
889:
632:
628:
583:
524:
469:
425:
208:
2771:
2513:
1817:. Parentheses ( ) can be nested inside brackets to indicate a repeating unit, as in
1785:
For more complex ions, brackets are often used to enclose the ionic formula, as in
4262:
4250:
4170:
3975:
3923:
3356:
3231:
3196:
3117:
3105:
3065:
2970:
2903:
2702:
2509:
2501:
2469:
2372:
2362:
2344:
2247:
2239:
2127:
1987:
1514:
1043:
775:
649:
433:
47:
2459:
687:
is a variable non-whole number ratio with n ranging from over 4 to more than 6.5.
3858:
3833:
3371:
3311:
3095:
2995:
2980:
2965:
2872:
2862:
2750:
2716:
2692:
2436:
1039:
653:
4095:
4060:
3843:
3733:
3698:
3683:
3618:
3613:
3512:
3412:
3331:
3306:
3271:
3216:
3191:
3060:
2908:
2367:
1930:
1751:
1605:
903:
786:
782:
748:
575:
4277:
4125:
3980:
3863:
3838:
3819:
3763:
3643:
3601:
3596:
3336:
3326:
3286:
3161:
3055:
3010:
2985:
2867:
2847:
2421:
1953:
1910:
1906:
1432:
1377:
675:
532:
528:
2575:
1564:). The same number of atoms of each element (10 hydrogens and 4 carbons, or
4201:
4055:
3908:
3848:
3828:
3800:
3728:
3608:
3591:
3546:
3497:
3402:
3122:
3075:
2923:
2734:
2352:
1554:
1020:
620:
exist that can and do specify uniquely any complex structural formula (see
2617:
1945:. Also a study involving stable isotope ratios might include the molecule
4175:
4085:
4050:
4017:
3943:
3918:
3758:
3663:
3633:
3517:
3432:
3422:
3152:
3080:
2611:
1934:
1683:
1518:
1499:
1492:
1024:
568:
52:
2505:
2473:
1058:
574:
Since a chemical formula must be expressed as a single line of chemical
4090:
4032:
3995:
3970:
3868:
3678:
3541:
2404:
Chemistry³ : introducing inorganic, organic and physical chemistry
1998:
1553:
implies a central carbon atom connected to one hydrogen atom and three
1435:
in a simple chemical substance, though it does not necessarily specify
536:
2542:
Petrucci, Ralph H.; Harwood, William S.; Herring, F. Geoffrey (2002).
1517:
that are the same may be expressed by enclosing the repeated group in
762:. These two molecules have the same empirical and molecular formulae (
420:
is a way of presenting information about the chemical proportions of
4022:
3887:
3723:
3527:
3407:
3261:
3236:
2259:
2138:, or it might include a variable part represented by a letter, as in
2083:
2075:
1755:
1617:
1522:
1062:
895:
609:
2488:
1952:
A left-hand subscript is sometimes used redundantly to indicate the
37:
3990:
3902:
3703:
3566:
3551:
3522:
3391:
3166:
2990:
2934:
2928:
2897:
2842:
2810:
2235:
2231:
2204:
2196:
2170:
1455:
1279:
986:
691:
605:
494:
429:
2567:
523:
Sometimes a chemical formula is complicated by being written as a
4155:
3985:
3938:
3897:
3853:
3795:
3790:
3753:
3743:
3738:
3693:
3688:
3628:
3561:
3452:
3447:
3397:
3276:
3266:
3019:
2200:
2122:
for each element. However, there is a class of compounds, called
2119:
2068:
2027:
1922:
1767:
1679:
790:
705:
658:
613:
540:
482:
1666:(InChI) allow a computer to construct a structural formula, and
4206:
4027:
4009:
3472:
3442:
2944:
2755:
2590:
2224:
2055:
if M was inside the carbon network. A non-fullerene example is
1867:, and encloses the entire formula of the ion with charge +3.
1864:
1580:
1538:
1440:
1436:
1417:
1387:
of each other, since they both have the same molecular formula
982:
940:
921:
579:
502:
498:
408:
954:, and (for one of its isomers, n-hexane) a structural formula
3241:
3171:
2101:
2071:(As) atom is trapped in a cage formed by the other 32 atoms.
1782:. Here + and − are used in place of +1 and −1, respectively.
690:
When the chemical compound of the formula consists of simple
601:
1606:
Chemical names in answer to limitations of chemical formulae
2262:
chemical formulae into what is known as Hill system order.
2227:
421:
2607:
781:
Condensed chemical formulae may also be used to represent
2074:
This notation was proposed in 1991 with the discovery of
1739:
1662:
for examples. In addition, linear naming systems such as
473:, which use letters and numbers indicating the numerical
186:
173:
155:
2552:(8th ed.). Upper Saddle River, N.J: Prentice Hall.
1398:, but they have different structural formulas as shown.
2107:
1990:, in order to show the balance of charge more clearly.
1491:. The two lines (or two pairs of dots) indicate that a
2541:
2156:
2801:
2550:
General chemistry: principles and modern applications
1245:
1237:
1207:
1199:
1169:
1161:
1131:
1123:
1101:
657:
whole numbers. For example, the empirical formula of
366:
358:
328:
320:
290:
282:
252:
244:
222:
143:
2608:
Molecular formula calculation applying Hill notation
2406:(Second ed.). Oxford: Oxford University Press.
2334:
989:
atoms. However, the empirical formula for hexane is
857:. For example, one systematic name for glucose is (2
723:
rather than the glucose empirical formula, which is
924:, structure, or absolute number of atoms. The term
834:, which illustrates that this compound consists of
467:The simplest types of chemical formulae are called
65:. Unsourced material may be challenged and removed.
2543:
2041:) with an atom (M) would simply be represented as
1269:
1019:, expressing the 1:1 ratio of component elements.
520:(12 hydrogen atoms, six carbon and oxygen atoms).
390:
192:
1673:
1575:) may be used to make a straight chain molecule,
4275:
2401:
45:An editor has performed a search and found that
648:A chemical formula identifies each constituent
636:electrical charges in chemical reactions, thus
1750:. The total charge on a charged molecule or a
1660:IUPAC nomenclature of inorganic chemistry 2005
1383:The two diagrams show two molecules which are
981:, implying that it has a chain structure of 6
2787:
2633:
2486:
2238:atoms next, and then the number of all other
1733:
920:. An empirical formula makes no reference to
2378:Simplified molecular-input line-entry system
1668:simplified molecular-input line-entry system
1639:) or on the opposite sides from each other (
1620:has two isomers, which the chemical formula
2647:
2610:. The library calculating Hill notation is
1754:may also be shown in this way, such as for
1495:connects the atoms on either side of them.
2794:
2780:
2640:
2626:
2525:
2523:
2271:United States Patent and Trademark Office
125:Learn how and when to remove this message
1997:
1057:
456:, it is not the same as a full chemical
2265:The Hill system was first published by
1656:IUPAC nomenclature of organic chemistry
1335:1:2:1), while its molecular formula is
27:Compact notation for chemical compounds
14:
4276:
2520:
2453:
1797:, which is found in compounds such as
1709:may be used to indicate this formula:
1354:6:12:6). For water, both formulae are
2775:
2621:
1365:
1000:. Likewise the empirical formula for
2108:Non-stoichiometric chemical formulae
1852:indicates that the ion contains six
1439:or complex structures. For example,
1401:
1053:
881:
193:{\displaystyle {\ce {Al_2(SO_4)_3}}}
63:adding citations to reliable sources
31:
2169:of chemical formulae. For example,
2157:General forms for organic compounds
1502:may be expressed with three lines (
24:
4166:Nexus for Exoplanet System Science
2234:is indicated first, the number of
2173:may be represented by the formula
1244:
1231:
1206:
1193:
1168:
1155:
1130:
1117:
913:, and for macromolecules, such as
582:. For example, glucose shares its
505:), while its molecular formula is
365:
352:
327:
314:
289:
276:
251:
238:
25:
4305:
4066:Atomic and molecular astrophysics
2803:Molecules detected in outer space
2583:
2434:
2118:Chemical formulae most often use
1664:International Chemical Identifier
1027:have the same empirical formula,
627:Chemical formulae may be used in
4256:
4244:
4232:
4221:
4220:
3027:
3018:
3009:
2589:
2337:
2082:), which can trap atoms such as
1993:
36:
4191:Polycyclic aromatic hydrocarbon
2402:Burrows, Andrew. (2013-03-21).
2533:New York: McGraw Hill. p. 120.
2480:
2428:
2395:
2214:
2153:is normally much less than 1.
1686:molecule that is described as
1674:Polymers in condensed formulae
1251:
1233:
1213:
1195:
1175:
1157:
1137:
1119:
448:. A chemical formula is not a
372:
354:
334:
316:
296:
278:
258:
240:
176:
160:
13:
1:
4116:Extraterrestrial liquid water
2531:Chemical Information Sources.
2462:Journal of Physical Chemistry
2388:
2358:Glossary of chemical formulae
1819:Hexamminecobalt(III) chloride
1050:, or has even more elements.
616:. Linear equivalent chemical
424:that constitute a particular
2124:non-stoichiometric compounds
638:balancing chemical equations
7:
3347:Protonated hydrogen cyanide
2330:
2195:≥ 1), giving the homologs
2114:Non-stoichiometric compound
1916:
943:has a molecular formula of
643:
446:subscripts and superscripts
51:to establish the subject's
10:
4310:
2111:
2019:
1734:Ions in condensed formulae
1609:
1506:) or three pairs of dots (
1405:
1369:
887:
4215:
4106:Earliest known life forms
4101:Diffuse interstellar band
4041:
3961:
3886:
3777:
3712:
3652:
3580:
3572:Protonated cyanoacetylene
3486:
3380:
3342:Protonated carbon dioxide
3302:Hydromagnesium isocyanide
3250:
3036:
3007:
2818:
2809:
2743:
2715:
2683:
2662:
2653:
2258:—it is possible to
928:refers to the process of
804:has an empirical formula
751:by the condensed formula
401:
203:
4151:Iron–sulfur world theory
4146:Photodissociation region
3849:Methyl-cyano-diacetylene
2514:2027/uiug.30112063986233
2383:
1513:Molecules with multiple
876:
811:, and molecular formula
48:sufficient sources exist
4226:Category:Astrochemistry
3816:, fullerene, buckyball)
3503:Cyanobutadiynyl radical
3478:Silicon-carbide cluster
3468:Protonated formaldehyde
2663:Non-structural formulas
2648:Molecular visualization
2529:Wiggins, Gary. (1991).
600:with a number of other
477:of atoms of each type.
4239:Outer space portal
4081:Circumstellar envelope
3046:Aluminium(I) hydroxide
2956:Phosphorus mononitride
2833:Aluminium monofluoride
2828:Aluminium monochloride
2487:Edwin A. Hill (1900).
2441:guides.hostos.cuny.edu
2086:to form, for example,
2067:, an ion in which one
2017:
1323:for glucose, which is
1271:
1091:
392:
194:
4289:Chemical nomenclature
4136:Interplanetary medium
4111:Extraterrestrial life
3749:Octatetraynyl radical
3367:Tricarbon monosulfide
2914:Magnesium monohydride
2602:Hill notation example
2256:lexicographical order
2080:endohedral fullerenes
2002:Traditional formula:
2001:
1925:are more relevant to
1652:chemical nomenclature
1612:Chemical nomenclature
1426:shape of the molecule
1272:
1061:
855:chemical nomenclature
622:chemical nomenclature
393:
195:
4263:Chemistry portal
4251:Astronomy portal
4197:RNA world hypothesis
4181:PAH world hypothesis
3874:Heptatrienyl radical
3806:Buckminsterfullerene
3694:Methylcyanoacetylene
3202:Silicon carbonitride
3177:Methylidynephosphane
3143:Magnesium isocyanide
3051:Aluminium isocyanide
2853:Carbon monophosphide
2725:Ball-and-stick model
2598:at Wikimedia Commons
2032:buckminsterfullerene
2022:Endohedral fullerene
1799:caesium dodecaborate
1099:
934:analytical chemistry
531:together, either in
220:
141:
59:improve this article
4141:Interstellar medium
4121:Forbidden mechanism
3934:Hydrogen isocyanide
3624:Hexatriynyl radical
3207:c-Silicon dicarbide
3112:Hydrogen isocyanide
2976:Silicon monosulfide
2951:Phosphorus monoxide
2919:Methylidyne radical
2878:Fluoromethylidynium
2838:Aluminium(II) oxide
2730:Space-filling model
2685:Structural formulas
2506:10.1021/ja02046a005
2474:10.1021/j100173a002
1299:Condensed formula:
1287:Molecular formula:
1079:Condensed formula:
1067:Molecular formula:
1048:quaternary compound
802:dichlorine hexoxide
678:, whose formula of
462:chemical substances
454:chemical structures
398:
200:
188:
175:
157:
4161:Molecules in stars
4131:Intergalactic dust
4076:Circumstellar dust
4018:Naphthalene cation
3953:Trihydrogen cation
3929:Hydrogen deuteride
3854:Methyltriacetylene
3689:Hexapentaenylidene
3508:E-Cyanomethanimine
3428:Cyclopropenylidene
3362:Tricarbon monoxide
3352:Silicon tricarbide
3322:Methylene amidogen
3312:Isothiocyanic acid
3227:Thioxoethenylidene
3187:Trihydrogen cation
3001:Titanium(II) oxide
2961:Potassium chloride
2940:Sulfur mononitride
2883:Helium hydride ion
2858:Carbon monosulfide
2244:alphabetical order
2018:
2010:The "@" notation:
1966:for dioxygen, and
1616:The alkene called
1422:structural formula
1385:structural isomers
1372:Structural formula
1366:Structural formula
1285:structural formula
1267:
1249:
1243:
1241:
1211:
1205:
1203:
1173:
1167:
1165:
1135:
1129:
1127:
1092:
1065:structural formula
930:elemental analysis
701:condensed formulae
696:molecular formulae
633:chemical reactions
629:chemical equations
479:Molecular formulae
470:empirical formulae
458:structural formula
404:Structural formula
388:
370:
364:
362:
332:
326:
324:
294:
288:
286:
256:
250:
248:
216:
190:
163:
158:
145:
137:
74:"Chemical formula"
4284:Chemical formulas
4271:
4270:
4186:Pseudo-panspermia
3882:
3881:
3829:Cyanodecapentayne
3769:N-Methylformamide
3744:Methyldiacetylene
3669:Aminoacetonitrile
3639:Methyl isocyanate
3557:Methyl isocyanide
3438:Isocyanoacetylene
3418:Cyanoformaldehyde
3297:Hydrogen peroxide
3182:Potassium cyanide
3138:Magnesium cyanide
3091:Disilicon carbide
3086:Dicarbon monoxide
2893:Hydrogen fluoride
2888:Hydrogen chloride
2769:
2768:
2711:
2710:
2698:Condensed formula
2675:Molecular formula
2670:Empirical formula
2655:Chemical formulas
2596:Chemical formulas
2594:Media related to
2559:978-0-13-014329-7
2494:J. Am. Chem. Soc.
2468:(20): 7564–7568.
2413:978-0-19-969185-2
2242:subsequently, in
2240:chemical elements
2167:homologous series
2165:. It generates a
2128:decimal fractions
1988:nuclear reactions
1927:nuclear chemistry
1515:functional groups
1480:or less commonly
1408:Condensed formula
1402:Condensed formula
1265:
1256:
1255:
1248:
1242:
1240:
1230:
1227:
1218:
1217:
1210:
1204:
1202:
1192:
1189:
1180:
1179:
1172:
1166:
1164:
1154:
1151:
1142:
1141:
1134:
1128:
1126:
1116:
1113:
1105:
1054:Molecular formula
1002:hydrogen peroxide
932:, a technique of
900:empirical formula
890:Empirical formula
882:Empirical formula
776:organic compounds
584:molecular formula
529:chemically bonded
525:condensed formula
426:chemical compound
414:
413:
386:
377:
376:
369:
363:
361:
351:
348:
339:
338:
331:
325:
323:
313:
310:
301:
300:
293:
287:
285:
275:
272:
263:
262:
255:
249:
247:
237:
234:
226:
214:
213:
209:Aluminium sulfate
166:
148:
135:
134:
127:
109:
18:Molecular formula
16:(Redirected from
4301:
4261:
4260:
4259:
4249:
4248:
4247:
4237:
4236:
4235:
4224:
4223:
4171:Organic compound
4071:Chemical formula
3976:Dihydroxyacetone
3924:Hydrogen cyanide
3609:Cyanodiacetylene
3463:Propadienylidene
3357:Thioformaldehyde
3232:Titanium dioxide
3197:Sodium hydroxide
3118:Hydrogen sulfide
3106:Hydrogen cyanide
3066:Carbonyl sulfide
3031:
3022:
3013:
2971:Silicon monoxide
2904:Hydroxyl radical
2816:
2815:
2796:
2789:
2782:
2773:
2772:
2717:Molecular models
2703:Skeletal formula
2660:
2659:
2642:
2635:
2628:
2619:
2618:
2612:available on npm
2593:
2579:
2547:
2534:
2527:
2518:
2517:
2484:
2478:
2477:
2457:
2451:
2450:
2448:
2447:
2432:
2426:
2425:
2399:
2373:Skeletal formula
2363:Nuclear notation
2347:
2345:Chemistry portal
2342:
2341:
2340:
2248:chemical symbols
2190:
2148:
2137:
2099:
2092:
2066:
2054:
2047:
2040:
2016:
2008:
1985:
1984:
1983:
1975:
1974:
1965:
1948:
1944:
1904:
1889:
1888:
1887:
1884:
1862:
1851:
1840:
1839:
1838:
1835:
1816:
1796:
1781:
1780:
1779:
1776:
1765:
1749:
1745:
1729:
1704:
1630:
1601:
1574:
1563:
1552:
1536:
1509:
1505:
1490:
1479:
1468:
1453:
1397:
1361:
1349:
1330:
1317:
1297:
1276:
1274:
1273:
1268:
1266:
1263:
1262:
1257:
1254:
1246:
1238:
1236:
1228:
1226:
1224:
1219:
1216:
1208:
1200:
1198:
1190:
1188:
1186:
1181:
1178:
1170:
1162:
1160:
1152:
1150:
1148:
1143:
1140:
1132:
1124:
1122:
1114:
1112:
1110:
1103:
1090:
1077:
1044:ternary compound
1034:
1018:
1014:
999:
980:
953:
919:
912:
849:
841:
833:
821:
810:
799:
773:
761:
746:
730:
722:
686:
672:
599:
566:
554:
519:
492:
434:chemical element
418:chemical formula
399:
397:
395:
394:
389:
387:
384:
383:
378:
375:
367:
359:
357:
349:
347:
345:
340:
337:
329:
321:
319:
311:
309:
307:
302:
299:
291:
283:
281:
273:
271:
269:
264:
261:
253:
245:
243:
235:
233:
231:
224:
215:
205:Chemical formula
201:
199:
197:
196:
191:
189:
187:
184:
179:
174:
171:
164:
156:
153:
146:
136:
130:
123:
119:
116:
110:
108:
67:
40:
32:
21:
4309:
4308:
4304:
4303:
4302:
4300:
4299:
4298:
4274:
4273:
4272:
4267:
4257:
4255:
4245:
4243:
4233:
4231:
4211:
4037:
4013:
4004:
3957:
3947:
3890:
3878:
3859:Propionaldehyde
3834:Ethylene glycol
3823:
3815:
3811:
3782:
3780:
3773:
3729:Cyanohexatriyne
3715:
3708:
3655:
3648:
3583:
3576:
3536:
3489:
3482:
3453:Methoxy radical
3383:
3376:
3372:Thiocyanic acid
3253:
3246:
3156:
3096:Ethynyl radical
3032:
3026:
3025:
3024:
3023:
3017:
3016:
3015:
3014:
3005:
2996:Sulfur monoxide
2981:Sodium chloride
2966:Silicon carbide
2873:Diatomic carbon
2863:Carbon monoxide
2805:
2800:
2770:
2765:
2751:Molecular graph
2739:
2707:
2693:Lewis structure
2679:
2649:
2646:
2586:
2560:
2538:
2537:
2528:
2521:
2485:
2481:
2458:
2454:
2445:
2443:
2433:
2429:
2414:
2400:
2396:
2391:
2386:
2343:
2338:
2336:
2333:
2325:
2321:
2314:
2310:
2303:
2297:
2287:
2217:
2188:
2180:
2174:
2163:general formula
2159:
2146:
2139:
2135:
2131:
2116:
2110:
2098:
2094:
2091:
2087:
2064:
2060:
2056:
2053:
2049:
2046:
2042:
2039:
2035:
2024:
2015:
2011:
2009:
2007:
2003:
1996:
1982:
1979:
1978:
1977:
1973:
1970:
1969:
1968:
1967:
1964:
1960:
1957:
1956:. For example,
1946:
1942:
1938:
1919:
1903:
1899:
1895:
1891:
1885:
1882:
1881:
1879:
1875:
1871:
1861:
1857:
1850:
1846:
1842:
1836:
1833:
1832:
1830:
1826:
1822:
1814:
1810:
1806:
1802:
1794:
1790:
1786:
1777:
1774:
1773:
1771:
1763:
1759:
1747:
1743:
1736:
1728:
1724:
1718:
1714:
1710:
1703:
1699:
1695:
1691:
1687:
1676:
1629:
1625:
1621:
1614:
1608:
1600:
1596:
1592:
1588:
1584:
1573:
1569:
1565:
1562:
1558:
1550:
1546:
1542:
1541:). The formula
1534:
1530:
1526:
1525:may be written
1521:. For example,
1507:
1503:
1489:
1485:
1481:
1478:
1474:
1470:
1467:
1463:
1459:
1452:
1448:
1444:
1410:
1404:
1396:
1392:
1388:
1374:
1368:
1359:
1355:
1352:number of atoms
1348:
1344:
1340:
1336:
1328:
1324:
1320:
1319:
1318:
1316:
1312:
1308:
1304:
1300:
1298:
1296:
1292:
1288:
1286:
1277:
1258:
1250:
1232:
1225:
1220:
1212:
1194:
1187:
1182:
1174:
1156:
1149:
1144:
1136:
1118:
1111:
1106:
1102:
1100:
1097:
1096:
1088:
1084:
1080:
1078:
1076:
1072:
1068:
1066:
1056:
1040:binary compound
1032:
1028:
1016:
1013:
1009:
1005:
998:
994:
990:
979:
975:
971:
967:
963:
959:
955:
952:
948:
944:
918:
914:
911:
907:
904:ionic compounds
892:
884:
879:
847:
843:
839:
835:
831:
827:
823:
820:
816:
812:
809:
805:
797:
793:
787:polyatomic ions
783:ionic compounds
771:
767:
763:
760:
756:
752:
744:
740:
736:
728:
724:
721:
717:
713:
709:
685:
679:
670:
666:
662:
661:may be written
654:chemical symbol
646:
598:
594:
590:
586:
576:element symbols
564:
560:
556:
552:
548:
544:
518:
514:
510:
506:
493:(twice as many
490:
486:
379:
371:
353:
346:
341:
333:
315:
308:
303:
295:
277:
270:
265:
257:
239:
232:
227:
223:
221:
218:
217:
185:
180:
172:
167:
159:
154:
149:
144:
142:
139:
138:
131:
120:
114:
111:
68:
66:
56:
41:
28:
23:
22:
15:
12:
11:
5:
4307:
4297:
4296:
4291:
4286:
4269:
4268:
4266:
4265:
4253:
4241:
4229:
4216:
4213:
4212:
4210:
4209:
4204:
4199:
4194:
4188:
4183:
4178:
4173:
4168:
4163:
4158:
4153:
4148:
4143:
4138:
4133:
4128:
4123:
4118:
4113:
4108:
4103:
4098:
4096:Cosmochemistry
4093:
4088:
4083:
4078:
4073:
4068:
4063:
4061:Astrochemistry
4058:
4053:
4047:
4045:
4039:
4038:
4036:
4035:
4030:
4025:
4020:
4015:
4011:
4007:
4002:
3998:
3993:
3988:
3983:
3978:
3973:
3967:
3965:
3959:
3958:
3956:
3955:
3950:
3945:
3941:
3936:
3931:
3926:
3921:
3916:
3914:Formyl radical
3911:
3906:
3900:
3894:
3892:
3884:
3883:
3880:
3879:
3877:
3876:
3871:
3866:
3861:
3856:
3851:
3846:
3844:Methyl acetate
3841:
3836:
3831:
3826:
3821:
3817:
3813:
3809:
3803:
3798:
3793:
3787:
3785:
3775:
3774:
3772:
3771:
3766:
3761:
3756:
3751:
3746:
3741:
3736:
3734:Dimethyl ether
3731:
3726:
3720:
3718:
3710:
3709:
3707:
3706:
3701:
3699:Methyl formate
3696:
3691:
3686:
3684:Glycolaldehyde
3681:
3676:
3671:
3666:
3660:
3658:
3650:
3649:
3647:
3646:
3641:
3636:
3631:
3626:
3621:
3619:Glycolonitrile
3616:
3614:Ethylene oxide
3611:
3606:
3605:
3604:
3594:
3588:
3586:
3578:
3577:
3575:
3574:
3569:
3564:
3559:
3554:
3549:
3544:
3539:
3534:
3530:
3525:
3520:
3515:
3513:Cyclopropenone
3510:
3505:
3500:
3494:
3492:
3484:
3483:
3481:
3480:
3475:
3470:
3465:
3460:
3455:
3450:
3445:
3440:
3435:
3430:
3425:
3420:
3415:
3413:Cyanoacetylene
3410:
3405:
3400:
3395:
3388:
3386:
3378:
3377:
3375:
3374:
3369:
3364:
3359:
3354:
3349:
3344:
3339:
3334:
3332:Methyl radical
3329:
3324:
3319:
3314:
3309:
3307:Isocyanic acid
3304:
3299:
3294:
3289:
3284:
3279:
3274:
3272:Isocyanic acid
3269:
3264:
3258:
3256:
3248:
3247:
3245:
3244:
3239:
3234:
3229:
3224:
3219:
3217:Sulfur dioxide
3214:
3209:
3204:
3199:
3194:
3192:Sodium cyanide
3189:
3184:
3179:
3174:
3169:
3164:
3159:
3154:
3150:
3145:
3140:
3135:
3130:
3125:
3120:
3115:
3109:
3103:
3101:Formyl radical
3098:
3093:
3088:
3083:
3078:
3073:
3068:
3063:
3061:Carbon dioxide
3058:
3053:
3048:
3042:
3040:
3034:
3033:
3008:
3006:
3004:
3003:
2998:
2993:
2988:
2983:
2978:
2973:
2968:
2963:
2958:
2953:
2948:
2942:
2937:
2932:
2926:
2921:
2916:
2911:
2909:Iron(II) oxide
2906:
2901:
2895:
2890:
2885:
2880:
2875:
2870:
2865:
2860:
2855:
2850:
2845:
2840:
2835:
2830:
2824:
2822:
2813:
2807:
2806:
2799:
2798:
2791:
2784:
2776:
2767:
2766:
2764:
2763:
2758:
2753:
2747:
2745:
2741:
2740:
2738:
2737:
2732:
2727:
2721:
2719:
2713:
2712:
2709:
2708:
2706:
2705:
2700:
2695:
2689:
2687:
2681:
2680:
2678:
2677:
2672:
2666:
2664:
2657:
2651:
2650:
2645:
2644:
2637:
2630:
2622:
2616:
2615:
2605:
2599:
2585:
2584:External links
2582:
2581:
2580:
2558:
2536:
2535:
2519:
2500:(8): 478–494.
2479:
2452:
2435:Miles, Linda.
2427:
2412:
2393:
2392:
2390:
2387:
2385:
2382:
2381:
2380:
2375:
2370:
2368:Periodic table
2365:
2360:
2355:
2349:
2348:
2332:
2329:
2328:
2327:
2323:
2319:
2316:
2312:
2308:
2305:
2301:
2298:
2295:
2292:
2289:
2285:
2216:
2213:
2182:
2176:
2158:
2155:
2141:
2133:
2112:Main article:
2109:
2106:
2096:
2089:
2062:
2058:
2051:
2044:
2037:
2026:The @ symbol (
2020:Main article:
2013:
2005:
1995:
1992:
1980:
1971:
1962:
1958:
1940:
1931:stable isotope
1918:
1915:
1909:, rather than
1901:
1897:
1893:
1877:
1873:
1859:
1848:
1844:
1828:
1824:
1812:
1808:
1804:
1792:
1788:
1761:
1752:polyatomic ion
1735:
1732:
1726:
1720:
1716:
1712:
1701:
1697:
1693:
1689:
1675:
1672:
1627:
1623:
1610:Main article:
1607:
1604:
1598:
1594:
1590:
1586:
1571:
1567:
1560:
1548:
1544:
1532:
1528:
1519:round brackets
1487:
1483:
1476:
1472:
1465:
1461:
1450:
1446:
1406:Main article:
1403:
1400:
1394:
1390:
1378:chemical bonds
1370:Main article:
1367:
1364:
1357:
1346:
1342:
1338:
1326:
1314:
1310:
1306:
1302:
1294:
1290:
1278:
1261:
1253:
1235:
1223:
1215:
1197:
1185:
1177:
1159:
1147:
1139:
1121:
1109:
1095:
1094:
1093:
1086:
1082:
1074:
1070:
1055:
1052:
1030:
1011:
1007:
996:
992:
985:atoms, and 14
977:
973:
969:
965:
961:
957:
950:
946:
916:
909:
888:Main article:
883:
880:
878:
875:
845:
837:
829:
825:
818:
814:
807:
795:
769:
765:
758:
754:
749:dimethyl ether
742:
738:
726:
719:
715:
711:
681:
668:
664:
645:
642:
596:
592:
588:
562:
558:
550:
546:
533:covalent bonds
516:
512:
508:
488:
412:
411:
382:
374:
356:
344:
336:
318:
306:
298:
280:
268:
260:
242:
230:
212:
211:
183:
178:
170:
162:
152:
133:
132:
44:
42:
35:
26:
9:
6:
4:
3:
2:
4306:
4295:
4292:
4290:
4287:
4285:
4282:
4281:
4279:
4264:
4254:
4252:
4242:
4240:
4230:
4228:
4227:
4218:
4217:
4214:
4208:
4205:
4203:
4200:
4198:
4195:
4192:
4189:
4187:
4184:
4182:
4179:
4177:
4174:
4172:
4169:
4167:
4164:
4162:
4159:
4157:
4154:
4152:
4149:
4147:
4144:
4142:
4139:
4137:
4134:
4132:
4129:
4127:
4126:Homochirality
4124:
4122:
4119:
4117:
4114:
4112:
4109:
4107:
4104:
4102:
4099:
4097:
4094:
4092:
4089:
4087:
4084:
4082:
4079:
4077:
4074:
4072:
4069:
4067:
4064:
4062:
4059:
4057:
4054:
4052:
4049:
4048:
4046:
4044:
4040:
4034:
4031:
4029:
4026:
4024:
4021:
4019:
4016:
4014:
4008:
4006:
3999:
3997:
3994:
3992:
3989:
3987:
3984:
3982:
3981:Methoxyethane
3979:
3977:
3974:
3972:
3969:
3968:
3966:
3964:
3960:
3954:
3951:
3949:
3942:
3940:
3937:
3935:
3932:
3930:
3927:
3925:
3922:
3920:
3917:
3915:
3912:
3910:
3907:
3904:
3901:
3899:
3896:
3895:
3893:
3889:
3885:
3875:
3872:
3870:
3867:
3865:
3864:Butyronitrile
3862:
3860:
3857:
3855:
3852:
3850:
3847:
3845:
3842:
3840:
3839:Ethyl formate
3837:
3835:
3832:
3830:
3827:
3825:
3818:
3807:
3804:
3802:
3799:
3797:
3794:
3792:
3789:
3788:
3786:
3784:
3776:
3770:
3767:
3765:
3764:Propionitrile
3762:
3760:
3757:
3755:
3752:
3750:
3747:
3745:
3742:
3740:
3737:
3735:
3732:
3730:
3727:
3725:
3722:
3721:
3719:
3717:
3711:
3705:
3702:
3700:
3697:
3695:
3692:
3690:
3687:
3685:
3682:
3680:
3677:
3675:
3672:
3670:
3667:
3665:
3662:
3661:
3659:
3657:
3651:
3645:
3644:Vinyl alcohol
3642:
3640:
3637:
3635:
3632:
3630:
3627:
3625:
3622:
3620:
3617:
3615:
3612:
3610:
3607:
3603:
3602:Vinyl cyanide
3600:
3599:
3598:
3597:Acrylonitrile
3595:
3593:
3590:
3589:
3587:
3585:
3579:
3573:
3570:
3568:
3565:
3563:
3562:Pentynylidyne
3560:
3558:
3555:
3553:
3550:
3548:
3545:
3543:
3540:
3538:
3531:
3529:
3526:
3524:
3521:
3519:
3516:
3514:
3511:
3509:
3506:
3504:
3501:
3499:
3496:
3495:
3493:
3491:
3485:
3479:
3476:
3474:
3471:
3469:
3466:
3464:
3461:
3459:
3458:Methylenimine
3456:
3454:
3451:
3449:
3446:
3444:
3441:
3439:
3436:
3434:
3431:
3429:
3426:
3424:
3421:
3419:
3416:
3414:
3411:
3409:
3406:
3404:
3401:
3399:
3396:
3393:
3390:
3389:
3387:
3385:
3379:
3373:
3370:
3368:
3365:
3363:
3360:
3358:
3355:
3353:
3350:
3348:
3345:
3343:
3340:
3338:
3337:Propynylidyne
3335:
3333:
3330:
3328:
3327:Methyl cation
3325:
3323:
3320:
3318:
3315:
3313:
3310:
3308:
3305:
3303:
3300:
3298:
3295:
3293:
3290:
3288:
3287:Fulminic acid
3285:
3283:
3280:
3278:
3275:
3273:
3270:
3268:
3265:
3263:
3260:
3259:
3257:
3255:
3249:
3243:
3240:
3238:
3235:
3233:
3230:
3228:
3225:
3223:
3220:
3218:
3215:
3213:
3210:
3208:
3205:
3203:
3200:
3198:
3195:
3193:
3190:
3188:
3185:
3183:
3180:
3178:
3175:
3173:
3170:
3168:
3165:
3163:
3162:Nitrous oxide
3160:
3158:
3151:
3149:
3146:
3144:
3141:
3139:
3136:
3134:
3131:
3129:
3126:
3124:
3121:
3119:
3116:
3113:
3110:
3107:
3104:
3102:
3099:
3097:
3094:
3092:
3089:
3087:
3084:
3082:
3079:
3077:
3074:
3072:
3069:
3067:
3064:
3062:
3059:
3057:
3056:Amino radical
3054:
3052:
3049:
3047:
3044:
3043:
3041:
3039:
3035:
3030:
3021:
3012:
3002:
2999:
2997:
2994:
2992:
2989:
2987:
2986:Sodium iodide
2984:
2982:
2979:
2977:
2974:
2972:
2969:
2967:
2964:
2962:
2959:
2957:
2954:
2952:
2949:
2946:
2943:
2941:
2938:
2936:
2933:
2930:
2927:
2925:
2922:
2920:
2917:
2915:
2912:
2910:
2907:
2905:
2902:
2899:
2896:
2894:
2891:
2889:
2886:
2884:
2881:
2879:
2876:
2874:
2871:
2869:
2868:Cyano radical
2866:
2864:
2861:
2859:
2856:
2854:
2851:
2849:
2848:Carbon cation
2846:
2844:
2841:
2839:
2836:
2834:
2831:
2829:
2826:
2825:
2823:
2821:
2817:
2814:
2812:
2808:
2804:
2797:
2792:
2790:
2785:
2783:
2778:
2777:
2774:
2762:
2759:
2757:
2754:
2752:
2749:
2748:
2746:
2742:
2736:
2733:
2731:
2728:
2726:
2723:
2722:
2720:
2718:
2714:
2704:
2701:
2699:
2696:
2694:
2691:
2690:
2688:
2686:
2682:
2676:
2673:
2671:
2668:
2667:
2665:
2661:
2658:
2656:
2652:
2643:
2638:
2636:
2631:
2629:
2624:
2623:
2620:
2613:
2609:
2606:
2603:
2600:
2597:
2592:
2588:
2587:
2577:
2573:
2569:
2565:
2561:
2555:
2551:
2546:
2540:
2539:
2532:
2526:
2524:
2515:
2511:
2507:
2503:
2499:
2496:
2495:
2490:
2483:
2475:
2471:
2467:
2463:
2456:
2442:
2438:
2431:
2423:
2419:
2415:
2409:
2405:
2398:
2394:
2379:
2376:
2374:
2371:
2369:
2366:
2364:
2361:
2359:
2356:
2354:
2351:
2350:
2346:
2335:
2317:
2306:
2299:
2293:
2290:
2283:
2282:
2281:
2278:
2274:
2272:
2268:
2267:Edwin A. Hill
2263:
2261:
2257:
2251:
2249:
2245:
2241:
2237:
2233:
2229:
2226:
2222:
2212:
2210:
2206:
2202:
2198:
2194:
2186:
2179:
2172:
2168:
2164:
2154:
2152:
2145:
2129:
2125:
2121:
2115:
2105:
2103:
2085:
2081:
2077:
2072:
2070:
2033:
2029:
2023:
2000:
1994:Trapped atoms
1991:
1989:
1955:
1954:atomic number
1950:
1936:
1932:
1928:
1924:
1914:
1912:
1908:
1868:
1866:
1855:
1854:ammine groups
1820:
1800:
1783:
1769:
1757:
1753:
1741:
1731:
1723:
1708:
1685:
1681:
1671:
1669:
1665:
1661:
1657:
1653:
1648:
1646:
1642:
1638:
1634:
1619:
1613:
1603:
1582:
1578:
1556:
1555:methyl groups
1540:
1524:
1520:
1516:
1511:
1501:
1496:
1494:
1457:
1442:
1438:
1434:
1429:
1427:
1423:
1419:
1415:
1409:
1399:
1386:
1381:
1379:
1373:
1363:
1353:
1334:
1284:
1282:
1259:
1221:
1183:
1145:
1107:
1064:
1060:
1051:
1049:
1045:
1041:
1036:
1026:
1022:
1003:
988:
984:
942:
939:For example,
937:
935:
931:
927:
923:
905:
901:
897:
891:
886:
874:
872:
868:
864:
860:
856:
851:
803:
792:
788:
784:
779:
777:
750:
732:
707:
703:
702:
697:
693:
688:
684:
677:
676:boron carbide
660:
655:
651:
641:
639:
634:
630:
625:
623:
619:
615:
611:
607:
603:
585:
581:
577:
572:
570:
542:
538:
534:
530:
526:
521:
504:
500:
496:
484:
480:
476:
472:
471:
465:
463:
459:
455:
451:
450:chemical name
447:
443:
439:
435:
431:
427:
423:
419:
410:
406:
405:
400:
380:
342:
304:
266:
228:
210:
206:
202:
181:
168:
150:
129:
126:
118:
107:
104:
100:
97:
93:
90:
86:
83:
79:
76: –
75:
71:
70:Find sources:
64:
60:
54:
50:
49:
43:
39:
34:
33:
30:
19:
4219:
4202:Spectroscopy
4070:
4056:Astrobiology
3909:Formaldehyde
3801:Benzonitrile
3592:Acetaldehyde
3547:Methanethiol
3498:Acetonitrile
3403:Carbodiimide
3282:Formaldehyde
3277:Cyanoethynyl
3128:Iron cyanide
3123:Hydroperoxyl
2924:Nitric oxide
2735:CPK coloring
2654:
2549:
2530:
2497:
2492:
2482:
2465:
2461:
2455:
2444:. Retrieved
2440:
2430:
2403:
2397:
2353:Formula unit
2279:
2275:
2264:
2252:
2220:
2218:
2208:
2192:
2184:
2177:
2162:
2160:
2150:
2143:
2117:
2073:
2025:
1951:
1920:
1869:
1863:) bonded to
1784:
1737:
1721:
1706:
1677:
1649:
1644:
1640:
1636:
1632:
1615:
1576:
1512:
1497:
1430:
1414:connectivity
1411:
1382:
1375:
1351:
1332:
1321:
1280:
1037:
1021:Formaldehyde
1015:, is simply
938:
925:
893:
885:
870:
866:
862:
858:
852:
780:
733:
699:
695:
689:
682:
647:
631:to describe
626:
617:
604:, including
573:
569:substituents
522:
478:
474:
468:
466:
441:
437:
417:
415:
402:
204:
121:
112:
102:
95:
88:
81:
69:
57:Please help
46:
29:
4176:Outer space
4086:Cosmic dust
4051:Abiogenesis
3963:Unconfirmed
3919:Heavy water
3759:Ethanethiol
3674:Cyanoallene
3664:Acetic acid
3634:Methylamine
3518:Diacetylene
3433:Formic acid
3423:Cyanomethyl
3081:Diazenylium
3071:CCP radical
2947:(molecular)
2931:(molecular)
2900:(molecular)
2221:Hill system
2215:Hill system
1935:superscript
1684:hydrocarbon
1500:triple bond
1493:double bond
1025:acetic acid
543:, which is
537:ionic bonds
475:proportions
4278:Categories
4091:Cosmic ray
4033:Silylidyne
3996:Hemolithin
3971:Anthracene
3888:Deuterated
3869:Pyrimidine
3679:Ethanimine
3542:Ketenimine
3398:Butadiynyl
3222:Thioformyl
3076:Chloronium
2744:Other ways
2568:2001032331
2446:2024-07-13
2389:References
2057:[As@Ni
1892:[Co(NH
1872:[Co(NH
1823:[Co(NH
906:, such as
85:newspapers
53:notability
4023:Phosphine
3891:molecules
3824:fullerene
3724:Acetamide
3528:Formamide
3408:Cyanamide
3262:Acetylene
3237:Tricarbon
3148:Methylene
3133:Isoformyl
3038:Triatomic
2811:Molecules
2422:818450212
2076:fullerene
1921:Although
1756:hydronium
1618:but-2-ene
1523:isobutane
1260:−
1222:−
1184:−
1146:−
1108:−
1063:Isobutane
926:empirical
922:isomerism
896:chemistry
842:ions and
828:][ClO
692:molecules
610:galactose
497:atoms as
381:−
343:−
305:−
267:−
229:−
115:July 2024
4294:Notation
4010:Linear C
3991:Graphene
3903:Ammonium
3704:Acrolein
3567:Propynal
3552:Methanol
3523:Ethylene
3392:Ammonium
3167:Nitroxyl
2991:Sulfanyl
2935:Imidogen
2929:Nitrogen
2898:Hydrogen
2843:Argonium
2820:Diatomic
2576:46872308
2331:See also
2236:hydrogen
2232:molecule
2207:for 1 ≤
2205:propanol
2197:methanol
2171:alcohols
2149:, where
2130:, as in
2120:integers
1923:isotopes
1917:Isotopes
1911:covalent
1841:. Here,
1680:polymers
1456:ethylene
987:hydrogen
844:[ClO
836:[ClO
824:[ClO
644:Overview
606:fructose
495:hydrogen
440:(+) and
432:, using
430:molecule
4156:Kerogen
4043:Related
3986:Glycine
3939:Propyne
3898:Ammonia
3796:Benzene
3791:Acetone
3783:or more
3754:Propene
3739:Ethanol
3629:Propyne
3448:Methane
3317:Ketenyl
3267:Ammonia
2269:of the
2260:collate
2246:of the
2201:ethanol
2078:cages (
2069:arsenic
2028:at sign
1939:[PO
1768:sulfate
1626:CH=CHCH
1539:isomers
1508:HC:::CH
1437:isomers
1418:isomers
1283:-Butane
794:[SO
791:sulfate
706:glucose
659:ethanol
652:by its
650:element
614:mannose
580:isomers
541:ethanol
483:glucose
99:scholar
4207:Tholin
4028:Pyrene
3473:Silane
3443:Ketene
2945:Oxygen
2756:SMILES
2574:
2566:
2556:
2420:
2410:
2225:carbon
1865:cobalt
1807:[B
1787:[B
1581:butane
1441:ethane
983:carbon
941:hexane
898:, the
747:, and
602:sugars
503:oxygen
499:carbon
409:butane
101:
94:
87:
80:
72:
4193:(PAH)
3781:atoms
3716:atoms
3656:atoms
3654:Eight
3584:atoms
3582:Seven
3490:atoms
3384:atoms
3254:atoms
3242:Water
3172:Ozone
3114:(HNC)
3108:(HCN)
2761:InChl
2384:Notes
2284:BrClH
2230:in a
2228:atoms
2211:≤ 3.
2102:ASCII
1907:ionic
1766:, or
1746:, or
1641:trans
1504:HC≡CH
1486:C::CH
1454:. In
1433:bonds
1333:ratio
877:Types
618:names
442:minus
422:atoms
106:JSTOR
92:books
3714:Nine
3382:Five
3292:HCCN
3252:Four
3212:SiNC
2572:OCLC
2564:LCCN
2554:ISBN
2418:OCLC
2408:ISBN
2219:The
2134:0.95
2095:La@C
2088:La@C
1740:ions
1738:For
1678:For
1658:and
1475:C=CH
1412:The
1023:and
908:CaCl
698:and
612:and
501:and
438:plus
407:for
207:for
78:news
4005:NCO
3905:ion
3812:, C
3779:Ten
3488:Six
3394:ion
2545:"3"
2510:hdl
2502:doi
2470:doi
2294:CCl
2291:BrI
2187:+ 1
2093:or
2050:M@C
2012:M@C
1929:or
1900:]Cl
1890:or
1880:]Cl
1843:(NH
1831:]Cl
1715:(CH
1692:(CH
1647:).
1643:or
1635:or
1633:cis
1543:(CH
1527:(CH
1081:(CH
915:SiO
894:In
806:ClO
757:OCH
708:is
555:or
553:−OH
549:−CH
485:is
428:or
61:by
4280::
3822:70
3814:60
3810:60
3808:(C
3533:HC
2570:.
2562:.
2548:.
2522:^
2508:.
2498:22
2491:.
2466:95
2464:.
2439:.
2416:.
2315:Br
2300:CH
2288:Si
2203:,
2199:,
2189:OH
2142:1−
2140:Fe
2132:Fe
2097:82
2090:60
2084:La
2063:20
2061:As
2059:12
2052:60
2045:60
2043:MC
2038:60
2014:60
2006:60
2004:MC
1949:.
1947:OO
1913:.
1858:NH
1821:,
1813:12
1809:12
1803:Cs
1801:,
1793:12
1789:12
1775:2−
1772:SO
1770:,
1758:,
1748:Cu
1744:Na
1730:.
1725:CH
1711:CH
1700:CH
1698:50
1688:CH
1622:CH
1602:.
1597:CH
1593:CH
1589:CH
1585:CH
1583::
1572:10
1559:CH
1551:CH
1535:CH
1498:A
1464:CH
1460:CH
1449:CH
1445:CH
1428:.
1395:10
1343:12
1325:CH
1313:CH
1309:CH
1305:CH
1301:CH
1295:10
1089:CH
1075:10
1046:,
1042:,
1029:CH
1017:HO
1004:,
976:CH
972:CH
968:CH
964:CH
960:CH
956:CH
951:14
869:,5
865:,4
861:,3
813:Cl
778:.
753:CH
745:OH
741:CH
737:CH
725:CH
716:12
680:CB
608:,
593:12
571:.
565:OH
561:CH
557:CH
545:CH
535:,
513:12
487:CH
416:A
165:SO
147:Al
4012:5
4003:2
4001:H
3948:D
3946:2
3944:N
3820:C
3537:N
3535:4
3157:H
3155:2
3153:N
2795:e
2788:t
2781:v
2641:e
2634:t
2627:v
2614:.
2578:.
2516:.
2512::
2504::
2476:.
2472::
2449:.
2424:.
2326:S
2324:4
2322:O
2320:2
2318:H
2313:5
2311:H
2309:2
2307:C
2304:I
2302:3
2296:4
2286:2
2209:n
2193:n
2191:(
2185:n
2183:2
2181:H
2178:n
2175:C
2151:x
2147:O
2144:x
2136:O
2065:]
2036:C
2034:(
1981:2
1976:O
1972:8
1963:2
1961:O
1959:8
1943:]
1941:4
1902:3
1898:6
1896:)
1894:3
1886:3
1883:−
1878:6
1876:)
1874:3
1860:3
1856:(
1849:6
1847:)
1845:3
1837:3
1834:−
1829:6
1827:)
1825:3
1815:]
1811:H
1805:2
1795:]
1791:H
1778:4
1764:O
1762:3
1760:H
1727:3
1722:n
1719:)
1717:2
1713:3
1707:n
1702:3
1696:)
1694:2
1690:3
1645:E
1637:Z
1628:3
1624:3
1599:3
1595:2
1591:2
1587:3
1579:-
1577:n
1570:H
1568:4
1566:C
1561:3
1557:(
1549:3
1547:)
1545:3
1533:3
1531:)
1529:3
1488:2
1484:2
1482:H
1477:2
1473:2
1471:H
1466:2
1462:2
1451:3
1447:3
1393:H
1391:4
1389:C
1360:O
1358:2
1356:H
1350:(
1347:6
1345:O
1341:H
1339:6
1337:C
1331:(
1329:O
1327:2
1315:3
1311:2
1307:2
1303:3
1293:H
1291:4
1289:C
1281:n
1264:H
1252:|
1247:H
1239:H
1234:|
1229:C
1214:|
1209:H
1201:H
1196:|
1191:C
1176:|
1171:H
1163:H
1158:|
1153:C
1138:|
1133:H
1125:H
1120:|
1115:C
1104:H
1087:3
1085:)
1083:3
1073:H
1071:4
1069:C
1033:O
1031:2
1012:2
1010:O
1008:2
1006:H
997:7
995:H
993:3
991:C
978:3
974:2
970:2
966:2
962:2
958:3
949:H
947:6
945:C
917:2
910:2
871:R
867:R
863:S
859:R
848:]
846:4
840:]
838:2
832:]
830:4
826:2
819:6
817:O
815:2
808:3
798:]
796:4
772:O
770:6
768:H
766:2
764:C
759:3
755:3
743:2
739:3
729:O
727:2
720:6
718:O
714:H
712:6
710:C
683:n
671:O
669:6
667:H
665:2
663:C
597:6
595:O
591:H
589:6
587:C
563:2
559:3
551:2
547:3
517:6
515:O
511:H
509:6
507:C
491:O
489:2
385:H
373:|
368:H
360:H
355:|
350:C
335:|
330:H
322:H
317:|
312:C
297:|
292:H
284:H
279:|
274:C
259:|
254:H
246:H
241:|
236:C
225:H
182:3
177:)
169:4
161:(
151:2
128:)
122:(
117:)
113:(
103:·
96:·
89:·
82:·
55:.
20:)
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