A nucleus .n^ m X emits one alpha-partic...

A nucleus `._n^ m X` emits one `alpha-`particle and two `beta-`particles. The resulting nucleus is

A

`""_(n)X^(m-4)`

B

`""_(n-2)Y^(m-4)`

C

`""_(n-4)Z^(m-4)`

D

`""_(n-1)Z^(m-4)`

Text Solution

Verified by Experts

The correct Answer is:

D

`""_(n)X^(m) overset(alpha)rarr ""_(n-2)X^(m-4) overset(beta^(-))rarr ""_(n-1)Z^(m-4)`

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