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Assertion (A): Half life of a radioactiv...

Assertion `(A):` Half life of a radioactive isotope is the time required to decrease its mass number by half.
Reason `(R) : ` Halt`-` of readioactive isotopes is independent of the initial amount of the isotope.

A

If both `(A)` and `(R)` are correct , and `(R)` is the correct explanation of `(A)`

B

If both `(A)` and `(R)` are correct, but (R) is not the correct explanation of `(A)`

C

If `(A)` is correct, but `(R)` is incorrect.

D

If both `(A)` and `(R)` are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
D
Half`-` life is the time period required to decrease the initial number of atoms or amount of radioactive substance to half.
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