A sample of hydrogen atom is excited to n=4 state. In the spectrum of emitted radiation, the number of lines in the ultraviolet and visible regions are respectively:

Hydrogen atoms are excited on n=4 state. In the spectrum of emitted radiation, number of lines in the ultraviolet and visible regions are respectively-

Hydrogen atoms are excited on n=4 state. In the spectrum of emitted radiation, number of lines in the unltraviolet and visible regions are respectively-

In the atomic spectrum of hydrogen the series of lines observed in the visible region is:

In a sample of hydrogen atoms, electrons jump from 10^(th) excited state to ground state. If X are the number of different ultraviolet radiations Y are the number of different visible radiations and Z are the possible number of different infrared radiations from 10^(th) excited state to third level. The value Z-(x + y) is (Assuming all the Balmer lines lie with in visible region)

Atomic hydrogen is excited from the grounds state to the n^(th) state. The number of lines in the emission spectrum will be:

Atomic hydrogen is excited from the grounds state to the n^(th) state. The number of lines in the emission spectrum will be:

In sample of hydrogen atoms , electron jump from 10^(th) excited state to ground state .If x are the number of different ultraviolet radiations , y are number of different visible radiational and z are number of differnet imfrared radtions. The Value of z-(x+y) is. [Assume all the Baler lines lie with visble region ].

In a hydrogen sample, if the atoms are excited to states with principal, quantum number 20, then the number of different wavelengths which may be observed in the spectrum is