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Fermium

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.

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Subheadings:

Tree Number(s): D01.268.271.100.275, D01.268.556.266, D01.496.749.305.100.275, D01.552.020.394, D01.552.544.266

MeSH Unique ID: D005286

Registry Number: Q70I3KBF4W

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