The ionization potential for hydrogen atom is `13.6 eV`, the ionization potential for `He^(+)` is

Options

A. 54.4 eV
B. 6.8 eV
C. 13.6 eV
D. 24.5 eV.

Answer

A

Explanation

I.P of `He^(+)` = I.P. of `H xx Z^(2)` (Where Z is the atomic number of He) = 13.6 eV `xx (2)^(2)` = 54.4 eV.