Atomic Number: 72

Name: Hafnium

Atomic symbol: Hf

Atomic Weight: 178.49

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f¹⁴5d²6s²

Ionization energies: 680 kJ/mol

Pauling electronegativity: 1.3

Melting Point: 2227^oC

Boiling Point: 4602^oC

Ionic radius: 0.78 angstroms (+4)