The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.
A. half-life
B. beta decay
C. alpha decay
D. isotope number
The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its HALF-LIFE.
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Asked 4/12/2012 11:53:05 AM
Updated 5/1/2014 5:57:00 AM
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