Which ionisation potential (IP) in the following equations atom experience the greatest amount of energy ?

Options

A. `Na to Na^(+)+e^(-)`
B. `K^(+) to K^(2+)+e^(-)`
C. `C^(2+) to C^(3+) +e^(-)`
D. `Ca^(+) to Ca^(2+) + e^(-)`

Answer

B

Explanation

`K^(+) to K^(2+)+e^(-)` Since `e^(-)` is to be removed from stable configuration.