Minimum energy required to takeout the only one electron from ground state of He+ is
Answer & explanation
Correct answer: option 2
$E_n=-\frac{13.6 z^2}{n^2} ~eV \Rightarrow E_1=-\frac{13.6 \times(2)^2}{(1)^2}$ = -54.4 eV
Amount of energy required to take electron from Ground state of He+ is 54.4 eV.