Initial mass of a radioactive element is 40 g. How many grams of it would be left after 24 years, if its half-life period is 8 yearsA. 2B. 5C. 10D. 20

Initial mass of a radioactive element is 40 g. How many grams of it wo

1.	Initial mass of a radioactive element is 40 g. How many grams of it would be left after 24 years, if its half-life period is 8 yearsA. 2B. 5C. 10D. 20
Answer» Correct Answer - B `N = (N_(0))/(2^(n)) and n = (24)/(8) = 3` `N = (40)/(2^(3)) = (40)/(8) = 5`

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Initial mass of a radioactive element is 40 g. How many grams of it would be left after 24 years, if its half-life period is 8 yearsA. 2B. 5C. 10D. 20

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