Question

The number of `beta-` particle emitted during the change `._(a)X^(c ) rarr _(d)Y^(b)` is
A. `(a-b)/(4)`
B. `d + [(a-b)/(2)] + c`
C. `d + [(c - b)/(2)] -a`
D. `d + [(a-b)/(2)] - c`

Answer 1

Correct Answer - `(c)`
`._(0)^(C)X rarr ._(d)^(b)Y + m ._(2)^(4)He + n ._(-1)^(0)e`
`:. C = b + 4m`
`:. M = (c-b)/(4)` and `a = d + 2m - n`
`:. n = d + 2m - a = d + [(c-b)/(2)] - a`