What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level n 4 to an energy level with n 2?

Text Solution

Solution : According to Rydberg equation, <br> `1/lambda = 109678 (1/(n_1^2) - 1/(n_2^2)) cm^(-1)` <br> Here `n_1 = 1, n_2 = 4` <br> `:. 1/lambda = 109678(1/(1^2) - 1/(4^2)) cm^(-1)` <br> `= 109678 xx 15/16 cm^(-1)` <br> or `lambda = (16)/(109678 xx 15 cm^(-1)) = 9.72 xx 10^(-6) cm` <br> `= 97.2 xx 10^(-9) m` <br> `= 97.2 nm`.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

No worries! We‘ve got your back. Try BYJU‘S free classes today!

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App