At some instant the ratio of the amount of two radioactive elements is 2 : 1 . If their half-lives respectively are 12 hours and 16 hours, then after two days, the ratio of the amount of two substance

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At some instant the ratio of the amount of two radioactive elements is 2 : 1 . If their half-lives respectively are 12 hours and 16 hours, then after two days, the ratio of the amount of two substances is

TestHub · Accepted Answer

N 1 = 1 2 4 N 0 = N 0 16 and for the second element N 2 = 1 2 3 N 0 ' = N 0 ' 8 N 1 N 2 = N 0 N 0 ' 8 16 = N 0 2 N 0 ' Now given that N 0 : N 0 ' = 2 : 1 N 1 N 2 = 2 2 = 1 : 1

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