Fermium
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Fermium
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CAS No:
7440-72-4
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Formula:
Fm
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Chemical Name:
Fermium
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Synonyms:
Fermium
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CAS No:
Description
chemical properties similar to those of erbium; man-made radioactive element; discovered in 1952 in debris from thermonuclear explosion by Ghiorso and colleagues; t1/2 of 257Fm is 100 days [KIR78] [HAW93] [MER06]
Fermium is an actinoid atom and a f-block element atom.|A man-made radioactive actinide with atomic symbol Fm, and atomic number 100. Its known isotopes range from 244-254 and 256-258. Its valence can be +2 or +3. Like einsteinium, it was discovered in 1952 in the debris from a thermonuclear explosion.