Question

The wavlength of a spectral line for an electronic transition is inversely related to:

• A. The number of electrons undergoing the transition
• B. Mass of the atom
• C. The difference in the energy of the energy levels involved in the transition
• D. The velocity of electrons undergoing the transition

Answer 1

The correct option is C The difference in the energy of the energy levels involved in the transition

The wavelength of a spectral line for an electronic transition is inversely proportional to the difference in the energy levels involved in the transition.
$△E=E_2-E_1=\frac{hc}{\lambda }$
$\lambda \propto \frac{1}{△E}$