A radioactive sample initially contains N atoms. After three half-lives the number of atoms that…

A radioactive sample initially contains N atoms. After three half-lives the number of atoms that have disintegrated is
  • A.
    (frac{N}{8})
  • B.
    (frac{3N}{8})
  • C.
    (frac{5N}{8})
  • D.
    (frac{7N}{8})
Correct Answer: Option A
Explanation

N (to) (frac{N}{2}) (to) (frac{N}{4}) (to) (frac{N}{8})

You May Also Like