An electron in a hydrogen atom makes a cascade transition from the fifth energy level…
CHEMISTRY · Multi-part · CBSE · Chemistry · Structure of Atom · Structure of Atom
Problem
An electron in a hydrogen atom makes a cascade transition from the fifth energy level to the second energy level via one intermediate state.
(a) State the relation connecting the energy difference between two stationary states and the frequency of the photon emitted in the transition.
(b) Qualitatively explain why the two photons emitted during the 5→m and m→2 transitions do not have the same wavelength. Mention the factor on which each wavelength depends.
(c) Arrange the wavelengths of the two photons in increasing order and give a brief justification for your answer.