Back to Table
Atomic Number: 72
Hf
Hf

Hafnium

178.4900 u

Category

transition metal

State at Room Temperature

solid

Electron Configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d²

Valence Electrons

2

Lewis Dot:••

Electronegativity

1.3

Pauling scale

Oxidation States

+4

Melting Point

2506 K

2232.85°C

Boiling Point

4876 K

4602.85°C

Density

13.31

g/cm³

Position in Table

Group 4Period 6d-block

Discovery

Historical Information

Discovered byDirk Coster, George de Hevesy
Year1923

Common Uses

Applications & Industries

Nuclear reactors, microprocessors, plasma cutting, alloys

Need more chemistry tools? Check out bloodtypeguide.com for additional resources.