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Thorium

(Th)

Category

Actinoid

Series

actinide

Relative atomic mass

232.03806

Density

11.72

Melting point (°C)

1860

Boiling point (°C)

3977

Electronegativity (Pauling)

1.3

Discovery year

1917

Discovered by

Ernest Rutherford

created by @lukaswyss

Thorium (Th) – Element 90