Question

When an electron from an excited hydrogen atom undergoes the transition from energy level $\mathrm{n}=4\mathrm{to}\mathrm{n}=2$, the emission of radiations will give rise to

Answer 1

Hydrogen spectral series:

• The spectral lines arise due to the transition of electrons from higher energy to lower energy levels.
• It is an emission spectrum.
• Based on the transition of higher to lower energy state where it rests at different $\mathrm{n}=1,2,3,..$, the spectral lines are assigned.
• There are five spectral line series they are: Lyman, Balmer, Paschen, Brackett, and Pfund.

$\mathrm{n}=4\mathrm{to}\mathrm{n}=2$ transition:

• From the above diagram, we can able to know the transition belongs to the Balmer series.
• Balmer series occurs in the visible region in the electromagnetic spectrum.
• The line belongs to a bluish colour.