Fermium (Fm) in the periodic table — PeriodicTable

Fermium (Fm) in the periodic tableFermium is element 100, an actinoid of the f block, in period 7. Its ground-state configuration is [Rn] 5f12 7s2, and it usually shows the oxidation states 0, 3.It was discovered in 1952, by Seaborg.Name origin: Enrico Fermi, physicist. Blank rows are columns the sheet does not measure for this element.

Property

Value

Unit

Atomic weight

257

Da

Electronegativity

1.3

First ionisation energy

627

kJ/mol

Melting point

1125

K

Abundance

0

mg/kg

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