A sample of hydrogen gas in its ground state is irradiated with photons of `10.02 eV` energies. The radiation from the above sample is used to irradiate two other sample of excited ionized `He^(+)` and excited ionized `Li^(2+)`, repectively. Both the ionized samples absorb the incident radiation.
Which is the smallest wavelength that will be observed in spectra of `Li^(2+)` ?

Options

A. `8.6nm`
B. `10.4nm`
C. `12.8nm`
D. `4.6nm`

Answer

B

Explanation

`lambda_(min)=(hc)/DeltaE=10.4nm`