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Radioactive decay follows first order ki...

Radioactive decay follows first order kinetics and the rate constant is often termed as decay constant. Certain radioactive substances may undero sequential decays in order to convert into a stable nucleus. The series comprising all such elements is termed as radioactive disintegration series.
A radioactive series is formed 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 ?

A

12

B

4

C

3

D

6

Text Solution

Verified by Experts

The correct Answer is:
C
After a very long time `: lambda_(1)N_(A)=lambda_(2)N_(B)`
`(N_(A))/(N_(B))=(lambda_(1))/(lambda_(2))=(4 xx 10^(-2))/(16 xx10^(-5))=(1)/(4)=10^(-7)=2.5 xx 10^(-8) `
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Knowledge Check

  • 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?

    A
    12
    B
    4
    C
    3
    D
    6

  • Radioactive decay follows which order kinetics?

    A
    zero
    B
    1
    C
    2
    D
    3

  • Radioactive decay is a

    A
    Second order reaction
    B
    First order reaction
    C
    Zero order reaction
    D
    Third order reaction

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    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) ?

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