103

Radioactive

Lr

Lawrencium

(262)

Actinide
Solid

Discovery

Ghiorso, Albert (1961)

Etymology

Meaning

In honor of Ernst Lawrence

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)

1627.0 °C

1900.15 K

Electronegativity

1.30