In a sample of "H" atom,total number of spectral lines obtained during transition of electron from "4^(" th ")" excited state to ground state is

Total number of spectral in UV region during transition from 5 ^(th) excited state to 1^(St) excited state

The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from 5^("th") orbit to ground level is:

The total number of spectral lines obtained when an electron jumps, from n = 5 to n =1 in a sample of hydrogen atoms.

The number of possible lines of Paschenc series when electron jumps from 7^(th) excited state to ground state ( in hydrogen like atom ) is :

The number of spectral lines orbitals in Bohr spectrum of hydrogen atom when an electron is excited from ground level is 5th orbit is

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