Atomic Number (# of protons)

73

Mass (amu)

180.9

Density

16.6 g/cm³ (20⁰C, 1 atm)

Electron Configuration

[Xe]4f¹⁴5d³6s²

Oxidation States (bold = most stable)

+5

Atomic Radius (pm)

143

Ionic Radius (pm)

(+5)64

Electronegativity

1.3

Melting Point (⁰C, 1 atm)

3020

Electron Affinity (eV)

0.32

Boiling Point(⁰C, 1 atm)

5458

1^st Ionization energy (eV)

7.89

Enthalpy of Fusion (kJ/mole)

31.4

2^nd Ionization Energy (eV)

Enthalpy of Vaporization (kJ/mole)

753.1

3^rd Ionization Energy (eV)

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

0.14