The half period of a redioactive substance is 8 years after 16 years the mass of substance will reduce from starting 16 to g ? 1.42.83.24.6 plz give me ans

The half period of a redioactive substance is 8 years after 16 years t

1.	The half period of a redioactive substance is 8 years after 16 years the mass of substance will reduce from starting 16 to g ? 1.42.83.24.6 plz give me ans
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