A portrait of krypton is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements.
| Kr | Krypton |
Atomic number : 36
Relative atomic mass (12C = 12.0000) : 83.80 |
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| P H Y S I C A L D A T A | |
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Group 18 noble gas Density / kg m-3 : 2823 [s., m.p.]; 2413 [liq., b.p.]; 3.7493 [gas, 273 K] |
Melting point / K : 116.6 Boiling point / K : 120.85 |
| D I S C O V E R Y | |
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Krypton was discovered in 1898 by Sir William Ramsey and M.W. Travers at London, England. |
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| G E O L O G I C A L D A T A | |
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Abundances Sun (relative to H = 1 × 1012) : n.a. Earth's crust / p.p.m. : 1 × 10-5 Atmosphere / p.p.m. (volume) : 1.14 Residence time / years : n.a. Oxidation state : 0 |
Seawater / p.p.m. : 8 × 10-5 |
| B I O L O G I C A L D A T A | |
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Level in humans Blood / mg dm-3 : trace Bone / p.p.m. : nil Liver / p.p.m. : nil Muscle / p.p.m. : nil |
Daily dietary intake : n.a., but low Total mass of element in average (70 kg) person : n.a., but small |
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A portrait of krypton is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |