1.

The decay of a radioactive element follows first order kinetic. Thus,A. Half-life period `= a` constant`//K`,B. The rate of decay is independent of temperatureC. The rate can be altered by changing chemical conditionsD. The element will be completely transformed into new element after expiry of two half-life period

Answer» Correct Answer - A
`t_(1//2) = (0.693)/(K)`


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