What is the potential energy of an electron present in `N-` shell of the `Be^(3+)` ion ?

Options

A. `-3.4 eV`
B. `-6.8 eV`
C. `-13.6 eV`
D. `-27.2 eV`

Answer

D

Explanation

Energy of N - Shell ` = (-13.6xx(4)^(2))/((4)^(2)) = - 13.6 eV`
`therefore P.E = 2 xx E rArr xx -13.6 = - 27.2 eV`