The maximum energy is present in any electron at

The maximum wavelength of radiation that can ionise a sodium atom is $2414 \ \mathring{A}$. The ionisation energy of sodium per mole shall be

What will be the energy of an electron emitted from the ground state to the $n^{th}$ orbit?

First and second excitation potentials of hydrogen atom (in $eV$) would be respectively

How many photons are required to provide $1 \, J$ of energy with a wavelength of $5000 \, \mathring{A}$?

The Balmer series in the hydrogen spectrum corresponds to the transition from $n_1 = 2$ to $n_2 = 3, 4, ...$ This series lies in the visible region. Calculate the wave number of the line associated with the transition in the Balmer series when the electron moves to the $n = 4$ orbit. $(R_H = 109677 \ cm^{-1})$