The energy levels of a hypotherical one electron atom are shown in figure

Find the short wavelength limit of the series terminating at `n = 2`.

Options

A. `3256 Å`
B. `2339 Å`
C. `2509 Å`
D. `3494 Å`

Answer

B

Explanation

For short wavelength line of the series trminating at `n = 2`, a transition must take place from `n = oo` state to `n = 2` state. For this , `Delta E = 5.30 eV`
`lambda = (12400)/(Delta E (e V)) Å = (12400)/(5.30) Å = 2339 Å`