The half-life of radium is

A) the time after which an individual radium atom splits in half.
B) the time during which half of a large number of radium atoms will decay.
C) half the lifetime of the individual radium atom.
D) the life-time of the individual radium atom.
E) half of the total time during which a quantity of radium will radioactively decay.


B

Physics & Space Science

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Physics & Space Science