After three half lives, the percentage of fraction of amountA. 6.35B.

1.	After three half lives, the percentage of fraction of amountA. 6.35B. 12.5C. 50D. 75
Answer» Correct Answer - B Given `n = 3`, we know that `N = ((1)/(2))^(n) N_(0)` `:. ((N)/(N_(0))) = ((1)/(3))^(3) = (1)/(8)` or `(N)/(N_(0)) % = (1)/(8) xx 100 = 12.5%`

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After three half lives, the percentage of fraction of amountA. 6.35B. 12.5C. 50D. 75

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