The first excitation potential of sodium atom is 2.1 V. Calculate the longest wavelength of the
Channel: Doubtnut
Date: 08/11/2021

The first excitation potential of sodium atom is 2.1 V. Calculate the longest wavelength of the emitted photon. Will the photon be visible ? To Which spectral series will this photon belong? Given `R = 1.097 xx 10^(7) m^(-1)`