1.

Radioactive decay follows first order kinetics and the rate constant is often termed as decay constant. Certain radioactive substance may undergo sequential decays in order to convert into a stable necleus The series comprising all such elements is termed as radioactive disintegration series. A radioactive series is formes such that after each alpha decay there are two consecutive beta decay and the cycle repeats How many different elements this series can have if there are 12 members in the series?

Answer»

12
4
3
6

Answer :C


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