Atomic Number (# of protons)

21

Mass (amu)

44.96

Density

3.0 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Ar]3d¹4s²

Oxidation States (bold = most stable)

+3

Atomic Radius (pm)

161

Ionic Radius (pm)

(+3)75

Electronegativity

1.2

Melting Point (⁰C, 1 atm)

1541

Electron Affinity (eV)

0.19

Boiling Point(⁰C, 1 atm)

2836

1^st Ionization energy (eV)

6.56

Enthalpy of Fusion (kJ/mole)

14.10

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

314.20

3^rd Ionization Energy (eV)

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

0.568