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This is an accepted version of this page This is the latest accepted revision, reviewed on 25 January 2025. Chemical element with atomic number 10 (Ne) This article is about the chemical element. For other uses, see Neon (disambiguation). Chemical element with atomic number 10 (Ne) Neon, 10 Ne Neon Appearance colorless gas exhibiting an orange-red glow when placed in an electric field Standard ...
Molecular weight CAS No Helium-3: 3 He −269.96 N/A 3 14762-55-1 Helium-4: 4 He −268.928 N/A 4 7440-59-7 Hydrogen: H 2: −252.879 −259.16 2 1333-74-0 Deuterium [1] D 2: −249.49 −254.43 4 7782-39-0 Tritium [2] T 2: −248.12 −254.54 6 10028-17-8 Neon: Ne −246.046 −248.59 20 7440-01-9 Nitrogen: N 2: −195.795 −210.0 28 7727-37 ...
The inertness of noble gases makes them useful whenever chemical reactions are unwanted. For example, argon is used as a shielding gas in welding and as a filler gas in incandescent light bulbs. Helium is used to provide buoyancy in blimps and balloons. Helium and neon are also used as refrigerants due to their low boiling points.
Igneous rock (mass fraction in ppm) [12] 3 × 10 −3: 7 × 10 −5: 4 × 10 −2 ... Neon: 60–120 Krypton: 400–500 Xenon: 4000–5000
The abundances of the naturally occurring isotopes of neon. Neon (10 Ne) possesses three stable isotopes: 20 Ne, 21 Ne, and 22 Ne. In addition, 17 radioactive isotopes have been discovered, ranging from 15 Ne to 34 Ne, all short-lived. The longest-lived is 24 Ne with a half-life of 3.38(2) min. All others are under a minute, most under a second.
Some data, like standard atomic weight, are read from a central list. This way, enwiki has the same values everywhere. This way, enwiki has the same values everywhere. See § Chemical element data sets for more.
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The atomicity of homonuclear molecule can be derived by dividing the molecular weight by the atomic weight. For example, the molecular weight of oxygen is 31.999, [3] while its atomic weight is 15.879; [4] therefore, its atomicity is approximately 2 (31.999/15.879 ≈ 2).