Atomic Number (# of protons)

52

Mass (amu)

127.6

Density

6.24 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Kr]4d¹⁰5s²p⁴

Oxidation States (bold = most stable)

+2,-2,+4,+6

Atomic Radius (pm)

143

Ionic Radius (pm)

(-2)107

Electronegativity

2.0

Melting Point (⁰C, 1 atm)

450

Electron Affinity (eV)

1.97

Boiling Point(⁰C, 1 atm)

988

1^st Ionization energy (eV)

9.01

Enthalpy of Fusion (kJ/mole)

17.49

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

50.6

3^rd Ionization Energy (eV)

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

0.20