Atomic Number (# of protons)

48

Mass (amu)

112.4

Density

8.65 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Kr]4d¹⁰5s²

Oxidation States (bold = most stable)

+2

Atomic Radius (pm)

149

Ionic Radius (pm)

(+2)95

Electronegativity

1.5

Melting Point (⁰C, 1 atm)

321

Electron Affinity (eV)

Not Stable

Boiling Point(⁰C, 1 atm)

767

1^st Ionization energy (eV)

8.99

Enthalpy of Fusion (kJ/mole)

6.19

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

100

3^rd Ionization Energy (eV)

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

0.23