Name:
Thorium
Symbol:
Th
Atomic Number:
90
Atomic Mass:
232.038
Atomic Volume:
19.79 cc/mol
Discovered By:
Berzelius
Discovery Date:
1828
Origin of Name:
Thorium - named for Thor, the Norse god of war
Toxicity:
Chemical toxicity of thorium is not high, but the radioactive effect is great (especially highly active, short-lived members of the thorium series).
Summary:
Found as ores in Nature, and associated with uranium ores. Thorium is used in gas lantern mantels as it glows white when heated in a gas flame.
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