When an electron is excited from its $4^{\text {th }}$ orbit $5^{\text {th }}$ stationary orbit, the change…
When an electron is excited from its $4^{\text {th }}$ orbit $5^{\text {th }}$ stationary orbit, the change in the angular momentum of electron is approximately (Plank's constant $=\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}$ )