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 ,

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

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

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

If an electron of hydrogen atom moves from fourth excited state to ground state in Lyman series find the total number of spectral lines?

If an electron of hydrogen atom moves from fourth excited state to ground state in Lyman series find the total number of spectral lines?

In a sample of H- atom electrons make transition from 5^(th) excited state to ground state, producing all possible types of photons, then number of lines in infrared region are

In a sample of H- atom electrons make transition from 5^(th) excited state to ground state, producing all possible types of photons, then number of lines in infrared region are