Question

Which atom would emit light with the shortest wavelength

Answer 1

Explanation:

To see a wavelength emitted, the electrons would have to move down energy levels in order to see an emission spectra, which limits our answer choices to A and D:

And since n=3 to n=1 has a higher energy emitted than from n=2 to n=1, the one with the higher energy emitted would have the shorter wavelength as Wavlength and Energy are inversely related.