100 - Fermium [Fm]

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element by name0

100: Fermium - Fermium [Fm]
Group: 3
Period: 7
Atomic number: 100
Atomic mass: 257
Configuration: [Rn] 5f¹²7s²
Ionization energy: 6.5 eV
Electronic term: ³H₆
Electronegativity: 1.3