Thorium Series

Some articles on thorium series, thorium, series:

Radium Series - Actinide Alpha Decay Chains - Thorium Series
... The 4n chain of Th-232 is commonly called the "thorium series." Beginning with naturally occurring thorium-232, this series includes the following elements actinium ... All are present, at least transiently, in any natural thorium-containing sample, whether metal, compound, or mineral ... The series terminates with lead-208 ...

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