Chemistry - Atomic Structure Question with Solution | TestHub

The frequency of radiation emitted when the electron falls from $\mathrm{n}=4$ to $\mathrm{n}=1$ in a hydrogen atom will be (Given : ionization energy of $\mathrm{H}=2.18\times 10^{-18}\mathrm{J}$ atom ${}^{-1}$ and $\mathrm{h}=6.625\times 10^{-34}\mathrm{Js}$ )