The n = 5 electronic energy level in a hydrogen atom is 1.5 *10^-¹⁹ J higher than the n = 3 level.If an electron moves from the n = 5 level to the n = 3 level, then a photon of wavelength A) 1.3 nm, which is in the ultraviolet region, is emitted. B) 1.3 nm, which is in the ultraviolet region, is absorbed. C) 1,300 nm, which is in the infrared region, is absorbed. D) 1,300 nm, which is in the infrared region, is emitted. E) No light will be absorbed or emitted.

Question

Quizplus · Accepted Answer

When an electron moves from a higher energy level (n=5) to a lower energy level (n=3), energy is released in the form of a photon. The energy difference corresponds to a photon with a wavelength of 1,300 nm, which is in the infrared region, hence it is emitted, not absorbed.

The N = 5 Electronic Energy Level in a Hydrogen