The line spectrum of different elements provides evidence for
A)electrons traveling in orbits around the nucleus
B)the quantization of the energy of the electrons
C)the ground-state of the atom
D)the existence of a nucleus

Question

Quizplus · Accepted Answer

The line spectrum of different elements shows that only certain energies are allowed for electrons in an atom. This is evidence for the quantization of energy levels in atoms, which is a fundamental concept in quantum mechanics.

The Line Spectrum of Different Elements Provides Evidence for