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Atomic weight | Atomic volume | discovered | state (s, l, g) | melting point | boiling point | electronegativity | electron affinity | Shells | electron configuration | structure | uses | toxicity | characteristics | reaction with air | number of isotopes | hydride(s) | oxide(s) | chloride(s) | image | thermal conductivity | electrical conductivity | polarizability | source | abundance earth's crust | cost, pure | cost, bulk | rel. abund. solar system | Density @ 293 K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Argon(Ar) | 39.948 | 28.5 (cm3/mol) | 11/30/1893 | g | 84 (K) | 87.3 (K) | ... | ... | 2,8,8 | [Ne] 3s2 3p6 | fcc: face-centered cubic | lasers, light bulbs | no | Inert | none | 3 | none | none | none |  | 0.02 J/m-sec-deg | 0 1/mohm-cm | 1.586 (A^3) | Air | .5 (log) | 0.5 $/100g | $/100g | 5 (5) | 0 |
| Helium(He) | 4.003 | ... | 11/30/1894 | g | ... | 4.2 (K) | ... | (kJ/mole) | 2 | 1s2 | ... | cryogenics, blimps | no | ... | none | 2 | none | none | none |  | 0.15 J/m-sec-deg | 1/mohm-cm | .198 (A^3) | Natural gas, air | -2.1 (log) | 5.2 $/100g | $/100g | 9 (9) | 0 |
| Krypton(Kr) | 83.8 | 38.9 (cm3/mol) | 11/30/1897 | g | 116.6 (K) | 119.7 (K) | 3 | ... | 2,8,18,8 | [Ar] 3d10 4s2 4p6 | fcc: face-centered cubic | lamps, UV-laser | no | unreactive | none | 6 | none | none | none |  | 0.01 J/m-sec-deg | 0 1/mohm-cm | 2.5 (A^3) | Air | -4 (log) | 33 $/100g | $/100g | 1 (1) | 0 |
| Neon(Ne) | 20.17 | 16.7 (cm3/mol) | 11/30/1897 | g | 24.53 (K) | 27.1 (K) | ... | ... | 2,8 | [He] 2s2 2p6 | fcc: face-centered cubic | Neon signs | no | ... | none | 3 | none | none | none |  | 0.05 J/m-sec-deg | 0 1/mohm-cm | .396 (A^3) | Air | -2.3 (log) | 33 $/100g | $/100g | 6 (6) | 0 |
| Radon(Rn) | ... | 50.5 (cm3/mol) | 11/30/1899 | g | 202.2 (K) | 211 (K) | ... | ... | 2,8,18,32,18,8 | [Xe] 4f14 5d10 6s2 6p6 | ... | earthquake prediction | ... | Radioactive,air pollutant | none | ... | ... | ... |  | 0 J/m-sec-deg | 0 1/mohm-cm | 5.3 (A^3) | Synthetic(Ra-226 decay) | -12.4 (log) | $/100g | $/100g | l (l) | 0 |
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