What is the energy of the electron in `He^(Theta)`in the ground state ?

Answer

A, B, D

Explanation

`E_(n) = -k^(2)(2pi^(2)me^(4)Z^(2))/(n^(2)h^(2))`
`E_(n) = -k^(2)(8pi^(2)me^(4))/(n^(2)h^(2))(," = 2)`
`_(n) = - (5248)/(n^(2)) kJ mol^(-1)`
`E_(1) = - 5248 kJ mol^(-1)`