Atomic Number (# of protons)

45

Mass (amu)

102.9

Density

12.4 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Kr]4d⁸5s¹

Oxidation States (bold = most stable)

+2.+3,+4

Atomic Radius (pm)

135

Ionic Radius (pm)

(+3)67

Electronegativity

1.4

Melting Point (⁰C, 1 atm)

1963

Electron Affinity (eV)

1.14

Boiling Point(⁰C, 1 atm)

3697

1^st Ionization energy (eV)

7.46

Enthalpy of Fusion (kJ/mole)

21.76

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

495.4

3^rd Ionization Energy (eV)

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

0.24