Atomic Number (# of protons)

62

Mass (amu)

150.4

Density

7.52 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Xe]4f⁶6s²

Oxidation States (bold = most stable)

+3,+2

Atomic Radius (pm)

180

Ionic Radius (pm)

(+3)108

Electronegativity

1.1

Melting Point (⁰C, 1 atm)

1074

Electron Affinity (eV)

Not Available

Boiling Point(⁰C, 1 atm)

1794

1^st Ionization energy (eV)

5.64

Enthalpy of Fusion (kJ/mole)

8.62

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

166.4

3^rd Ionization Energy (eV)

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

0.20