Find out the energy of H atom in first excitation state

CHEMISTRY · Subjective · CBSE · Chemistry · Structure of Atom · Structure of Atom

Problem

Find out the energy of H atom in first excitation state. The value of permittivity factor

4\pi\epsilon_0 = 1.11264 \times 10^{-10} \text{ C}^2 \text{ N}^{-1} \text{ m}^{-2}