Chemistry - Atomic Structure Question with Solution | TestHub

Rydberg's formula for calculation of wave numbers of lines in hydrogen spectrum is

$\bar{\mathrm{v}}=\mathrm{R}\left[\frac{1}{{\mathrm{n}}_1^2}-\frac{1}{{\mathrm{n}}_2^2}\right]$

For Balmer series,${\mathrm{n}}_1=2$and${\mathrm{n}}_2=\mathrm{3,4},5$, so third line of the Balmer series is due to transition from fifth Bohr orbit to second Bohr orbit.