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Atomic Number: 100
Fm
Fm

Fermium

257.0000 u

Category

actinide

State at Room Temperature

solid

Electron Configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹²

Valence Electrons

2

Lewis Dot:••

Electronegativity

1.3

Pauling scale

Oxidation States

+3

Melting Point

1800 K

1526.85°C

Position in Table

Group Period 7f-block

Discovery

Historical Information

Discovered byAlbert Ghiorso and team
Year1952

Common Uses

Applications & Industries

Research in nuclear chemistry

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