Calculate the frequency of the spectrical line emitted when an electron in `n = 3` in H de-excited to the ground state `R_(H) = 109.737 cm^(-1)`

Explanation

`(1)/(lambda) = R_(H) [(1)/(n_(1)^(2)) - (1)/(n_(2)^(2))]`
`:.(1)/(lambda) = v=R_(H) .c[(1)/(n_(1)^(2)) - (1)/(n_(2)^(2))]`
`= 109737 xx 3.0 xx 10^(19) [(1)/(1^(2)) - (1)/(3^(2))]`
`= 2.92 xx 10^(15) s^(-1)`