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A certain radioactive material .(Z)^(A)X...

A certain radioactive material `._(Z)^(A)X` starts emitting `alpha` and `beta` particles successively such that the end product is `._(Z - 3)^(A - 8)Y`, The number of `alpha` and `beta` particles emitted are:

A

4 and 3 respectively

B

2 and 1 respectively

C

3 and 4 respectively

D

3 and 8 respectively

Text Solution

Verified by Experts

The correct Answer is:
B
`n_(alpha)= (A- (A- 8))/(4)= 2`
`n_(beta)= 2n_(alpha)- Z + Z. = 4- Z + (Z- 3)= 1`
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