Question

Specify the transition of electron in the wavelength of the line in the Bohr model of hydrogen atom which gives rise to the spectral line of highest wavelength.

(a) n = 3 to n = 1
(b) n = 3 to
(c) n = 4 to n = 1
(d) n = 2 n = 4 to n = 2​

Answer 1

The spectral line of highest wavelength in the Bohr model of the hydrogen atom corresponds to the n = 3 to n = 1 transition. The correct answer is option (a).

Step-by-step explanation:

In the Bohr model of the hydrogen atom, the spectral line of highest wavelength corresponds to the transition from

n = 3 to n = 1.

The Balmer series of emission lines in the hydrogen spectrum is due to transitions from orbits with n ≥ 3 to the orbit with n = 2.

The n = 3 to n = 2 transition gives rise to the line at 656 nm (red), which is the highest wavelength line in the Balmer series.

Therefore, the correct answer is (a) n = 3 to n = 1.