The wavelength of light associated with the n = 2 to n = 1 electron transition in the hydrogen spectrum is 1.216 * 10^-⁷ m. By what coefficient should this wavelength be multiplied to obtain the wavelength associated with the same electron transition in the Li²⁺ ion? A) 1 B) 1/3 C) 1/4 D) 1/7 E) 1/9

Question

Quizplus · Accepted Answer

The wavelength of light for electron transitions in hydrogen-like ions is inversely proportional to the square of the atomic number (Z). For Li²⁺, Z = 3, so the wavelength is 1/9 of that for hydrogen (Z = 1).

The Wavelength of Light Associated with the N = 2