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If a nucleus .(Z)^(A)x emits one alpha-p...

If a nucleus `._(Z)^(A)x` emits one `alpha`-particle and one `beta` (negative `beta`) particle in succession, then the daughter nucleus will have which of the following configurations?

A

A - 4 nucleons

B

A - 3 nucleons

C

A - Z - 3 neutrons

D

Z - 2 protons

Text Solution

Verified by Experts

The correct Answer is:
A, C
In `""_(Z)^(A)X` radioactive sample,
Number of nucleons = A
Number of protons = Z
After the emission of one `alpha` and one `beta^(-)` particle, number of nucleons = A - 4 and number of protons = Z - 2 + 1 = Z - 1
`therefore` Number of neutrons `= (A - 4) - (Z - 1) = A - Z - 3`.
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