For nuclide `""_(Z)^(A) X` , which of the following changes take place in respectively decay ?

Options

A. Both A and Z decreases in `alpha`- decay
B. Both A and Z do not Change in `gamma` -decay
C. A does not change but Z decreases by one unit in positron decay or K - electron capture
D. Both A and Z increases in `beta`- decay

Answer

A, B, C

Explanation

`alpha`- decay `implies` Z & A `implies` decreases , `gamma`- decay `implies` Z & A `implies` no change K-electron capture `implies Z darr & A` = no change