90

Radioactive

Th

Thorium

232.04

Actinide
Solid

Discovery

Berzelius, Jöns Jacob (1829)

Etymology

Old Norse

Meaning

Thunder

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Face-centered cubic

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

1750.0 °C

2023.15 K

Boiling point

  (at 101.325 kPa)

3200.0 °C

3473.15 K

Density

  (at 21 °C and 101.325 kPa)

15.40 g/cm3

Electronegativity

1.30