If 2.0g of a radioactive isotope has a h...

If 2.0g of a radioactive isotope has a half-life of 20 hr, the half-life of 0.5 g of the same substance is

A

20 hr

B

80 hr

C

5 hr

D

10 hr

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The correct Answer is:

A

Half-life period is a characteristic of radioactive isotope which is independent of initial concentration.

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