40

Zr

Zirconium

91.224

Transition Metal
Solid

Discovery

Klaproth, Martin Heinrich (1789)

Etymology

Persian via Arabic

Meaning

Gold-like

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)

1852.0 °C

2125.15 K

Boiling point

  (at 101.325 kPa)

3337.0 °C

3610.15 K

Density

  (at 21 °C and 101.325 kPa)

6.51 g/cm3

Electronegativity

1.33