In a container a mixture is prepared by mixing of three samples of hydrogen helium ion `(He^(+))` and lithium ion `(Li^(2+)).` In sample , all the hydrogen atoms are in 1st excited state and all the `He^(+)` ions are in third excited state and all the `Li^(2+))` ions are in fifth excited state. Find the total number of spectral lines observed in the emission spectrum of such a sample when the electrons return back to the ground state.

In a container a mixture is prepared by mixing of three samples of hyd

1.	In a container a mixture is prepared by mixing of three samples of hydrogen helium ion `(He^(+))` and lithium ion `(Li^(2+)).` In sample , all the hydrogen atoms are in 1st excited state and all the `He^(+)` ions are in third excited state and all the `Li^(2+))` ions are in fifth excited state. Find the total number of spectral lines observed in the emission spectrum of such a sample when the electrons return back to the ground state.
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