Question

Wavelength of third spectral line in Balmer series for Hydrogen is

Answer 1

Answer:Wavelength of third spectral line in Balmer series for Hydrogen is 434 nm.

Explanation:

The third spectral line in Balmer series denotes that electron is jumping from fifth energy level to second energy level.

Using Rydberg equation to calculate the wavelength

$\frac{1}{\lambda}=R_h(\frac{1}{n_f^{2}}-\frac{1}{n_i^2} )$......(1)

$n_f=2,n_i=5,\lambda=?,R_h=1.0973\times 10^7m^{-1}$

On substituting above values in equation (1)

$\lambda=4.34\times 10^{-7} m= 434nm(1m=10^{9}nm)$    

Answer 2

Answer:

This is the answer

Hope it helps..