If a radioactive isotope has a decay constant of 1.55 * 10-10 year-1, – McqOptions

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1.	If a radioactive isotope has a decay constant of 1.55 * 10-10 year-1, its half-life (in years) would be
A.	4.57 * 109
B.	4.47 * 109
C.	4.57 * 1010
D.	4.47 * 1010
Answer» C. 4.57 * 1010

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