Atomic Number (# of protons)

28

Mass (amu)

58.70

Density

8.90 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Ar]3d⁷4s²

Oxidation States (bold = most stable)

+2,+3

Atomic Radius (pm)

125

Ionic Radius (pm)

(+2)69

Electronegativity

1.8

Melting Point (⁰C, 1 atm)

1445

Electron Affinity (eV)

1.16

Boiling Point(⁰C, 1 atm)

2914

1^st Ionization energy (eV)

7.64

Enthalpy of Fusion (kJ/mole)

17.57

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

371.8

3^rd Ionization Energy (eV)

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

0.44