Calculate the energy emitted when electron of `1.0 g` atom of hydrogen undergo transition giving the spectral line of lowest energy in the visible region of its atomic spectrum.

Answer

`182.5 kJ`

Explanation

`E=13.6[1/n_(1)^(2)-1/n_(2)^(2)]eV//atom rArr E=13.6[(9-4)/36] eV//atom`
`E=13.6[(9-4)/(36)]xx6.023xx10^(23)xx1.6xx10^(-19) rArr 182.5 kJ`