In a sample of three H-atoms , all in the 5th excited state, electrons make a transition to 1st excited state. The maximum number of different spectral lines observed will be :

In a single isolated atom an electron make transition from 5th excited state to 2nd state then maximum number of different types of photons observed is

In a H like sample electrons make transition from 4th excited state to 1st state then

In a mixture of sample of H-atoms and He ions, electrons in all the H-atoms and He^+ ions are present in n = 4^"th" state. Then, find maximum number of different spectral lines obtained when all the electrons make transition from n=4 upto ground state

In a H- like sample electron makes transition from 4th excited state of 2nd state then:

If electron make transition from 7^(th) excited state to 2^(nd) state in H atom sample find the max. number of spectral lines observed.

If electron make transition from 7^(th) excited state to 2^(nd) state in H atom sample find the max. number of spectral lines observed.

In a H-like sample, electrons make transition from 4^(th) excited state upto 2^(nd) state. Then ,

Electrons in H_2 atom are excited from n = 1 (ground state) to n = 4 state. The number of spectral lines observed are