Which of the following transitions involves maximum amount of energy?

Options

A. `M^(-)(g)rarrM(g)`
B. `M(g)rarrM^(+)(g)`
C. `M^(+)(g)rarrM^(2+)(g)`
D. `M^(2+)(g)rarrM^(3+)(g)`

Answer

D

Explanation

`M^(2+)rarrM^(3+)` After the removal of `2e^(-)` the nuclear charge per `e^(-)` increases, due to which high energy is required to remove `3e^(-)`.