72

Hf

Hafnium

178.49

Transition Metal
Solid

Discovery

Coster, Dirk & De Hevesy, George Charles (1923)

Etymology

Latin

Meaning

Copenhagen

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Hexagonal close-packed

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

2150.0 °C

2423.15 K

Boiling point

  (at 101.325 kPa)

3315.0 °C

3588.15 K

Density

  (at 21 °C and 101.325 kPa)

13.31 g/cm3

Electronegativity

1.30