| Fm | Fermium | Atomic number : 100 Relative atomic mass (12C = 12.0000) : 257.0951 (Fm-257) |
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| P H Y S I C A L D A T A | |
| Group 3 actinide Density / kg m-3 : n.a. |
Melting point / K : n.a. Boiling point / K : n.a. |
| D I S C O V E R Y | |
| Fermium was discovered in the debris of the 1952 thermonuclear explosion in the Pacific by G.R. Choppin, S.G. Thompson, A. Ghiorso and B.G. Harvey. |
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| G E O L O G I C A L D A T A | |
| Abundances Sun (relative to H = 1 × 1012) : n.a. Earth's crust / p.p.m. : nil |
Seawater / p.p.m. : nil |
| B I O L O G I C A L D A T A | |
| Level in humans nil |
Daily dietary intake : nil Total mass of element in average (70 kg) person : nil |
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A portrait of fermium is available on the Visual Elements site. Up to 200 individual items of information on this element are available in The Elements. |