Atomic Number (# of protons)

75

Mass (amu)

186.2

Density

21.0 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Xe]4f¹⁴5d⁵6s²

Oxidation States (bold = most stable)

+7,+6,+4,+2,-1

Atomic Radius (pm)

137

Ionic Radius (pm)

(+7)53

Electronegativity

1.5

Melting Point (⁰C, 1 atm)

3186

Electron Affinity (eV)

0.15

Boiling Point(⁰C, 1 atm)

5596

1^st Ionization energy (eV)

7.88

Enthalpy of Fusion (kJ/mole)

33.05

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

707.1

3^rd Ionization Energy (eV)

Specific Heat Capacity ( J/ (g K), 25⁰C, 1 atm)

0.14