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225:. Hence, they have been renamed to 'noble gases', as the only two of these we know truly to be inert are helium and neon. However, a large amount of energy is required to drive such reactions, usually in the form of heat, pressure, or radiation, often assisted by
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is used in making advertising signs. Neon gas in a vacuum tube glows bright red in colour when electricity is passed through. Different coloured neon lights can also be made by using other gases.
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gas is mainly used to fill hot air and party balloons. Balloons filled with it float upwards and this phenomenon is achieved as helium gas is less dense than air.
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229:. The resulting compounds often need to be kept in moisture-free conditions at low temperatures to prevent rapid decomposition back into their elements.
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N), even under ordinary conditions. Under high pressures and temperatures and with the right catalysts, nitrogen becomes more reactive; the
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202:(valence shells) are completely filled, so that they have little tendency to gain or lose electrons. They are said to acquire a
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tubes and low energy light bulbs. Argon gas helps to protect the metal filament inside the bulb from reacting with oxygen and
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495:"Argon (Ar) - Chemical properties, Health and Environmental effects"
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133:. From a thermodynamic perspective, a substance is inert, or
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397:(5th ed.). New York: W.H. Freeman. p. 320.
49:. Unsourced material may be challenged and removed.
451:"The Haber Process for the manufacture of ammonia"
213:It is now known that most of these gases in fact
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145:) yet decomposes at a slow, or negligible rate.
519:"A Brief Summary of the Important Uses of Neon"
393:Atkins, Peter William; Jones, Loretta (2010).
318:Inert atmospheres consisting of gases such as
129:is used to describe a substance that is not
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395:Chemical principles: the quest for insight
152:, which appear in the last column of the
109:Learn how and when to remove this message
16:Substance that is not chemically reactive
255:under ordinary conditions, existing as
143:standard Gibbs free energy of formation
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352:the filament under high temperature.
543:"It's Elemental - The Element Helium"
47:adding citations to reliable sources
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475:"BBC - GCSE Bitesize: Noble gases"
271:. The presence of a strong triple
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306:uses such conditions to produce
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427:"The MSDS HyperGlossary: Inert"
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204:noble gas configuration
208:electron configuration
573:Chemical nomenclature
43:improve this article
578:Chemical properties
455:www.chemguide.co.uk
223:xenon tetrafluoride
131:chemically reactive
547:education.jlab.org
344:is widely used in
257:diatomic molecules
219:chemical compounds
58:"Chemically inert"
294:to form compound
174:The noble gases (
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550:. Retrieved
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346:fluorescence
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289:alkali metal
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148:Most of the
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41:Please help
36:verification
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593:Noble gases
374:Noble metal
158:inert gases
150:noble gases
125:, the term
99:August 2017
567:Categories
552:2018-08-26
528:2018-08-26
504:2018-08-26
480:2018-08-26
460:2018-08-26
436:2018-08-26
380:References
221:, such as
141:(positive
69:newspapers
413:501943698
350:corroding
314:Main uses
253:inert gas
243:The term
239:Inert gas
233:Inert gas
227:catalysts
170:Noble gas
164:Noble gas
135:nonlabile
123:chemistry
368:See also
324:nitrogen
249:nitrogen
139:unstable
332:oxygen-
308:ammonia
292:lithium
275:in the
188:krypton
83:scholar
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362:Helium
328:helium
251:is an
176:helium
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583:Gases
342:Argon
326:, or
320:argon
245:inert
196:radon
192:xenon
184:argon
90:JSTOR
76:books
409:OCLC
399:ISBN
356:Neon
194:and
180:neon
62:news
334:or
298:(Li
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121:In
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300:3
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277:N
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