In This post you will get answer of Q.
The largest wavelength in the ultraviolet region of the hydrogen spectrum is $122 ,nm$. The smallest wavelength in the infrared region of the hydrogen spectrum (to the nearest integer) is
Solution:
The series in U-V region is Lymen series. Longest wavelength corresponds to minimum energy which occurs in transition from n = 2 to n = 1. …(i)
The smallest wavelength in the infrared region corresponds to maximum energy of Paschen series.
$therefore lambda= frac{1}{R}$…(ii)
Solving Eqs. (i) and (ii), we get
$lambda=823.5 nm$
Solution:
The series in U-V region is Lymen series. Longest wavelength corresponds to minimum energy which occurs in transition from n = 2 to n = 1. …(i)
The smallest wavelength in the infrared region corresponds to maximum energy of Paschen series.
$therefore lambda= frac{1}{R}$…(ii)
Solving Eqs. (i) and (ii), we get
$lambda=823.5 nm$