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. If a radioactive disintegration series is observed involving only alpha and beta decays then which of the following isotopes cannot be a part of it if the parent isotope of the series is ._(91)Pa^(234)?

Radioactive decay follows first order kinetics and the rate constant i

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. If a radioactive disintegration series is observed involving only alpha and beta decays then which of the following isotopes cannot be a part of it if the parent isotope of the series is ._(91)Pa^(234)?
Answer» `._(86)Rn^(222)` `._(85)At^(216)` `._(82)Pb^(210)` `._(90)Th^(230)` Answer :B