Th

Thorium

Z 90 232.038 g/molActinide Radioactive

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes

Group

3

Period

7

Block

f

Occurrence

Merging neutron starsGeochemical class: Lithophile

Biological Role

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History

1828 (discovery, isolation)

Jöns Jacob Berzelius

Named By

Jöns Jacob Berzelius

Latin Name

Thorium

Abundance

Solar System

x

Sun

x

Meteorites

x

Earth's crust

x

Oceans

x

Humans

x