One problem with the planetary model of the atom is that it
A) cannot explain the observed spectrum of the various types of atoms.
B) cannot explain boiling, freezing, and other transitions between the three common states of matter.
C) cannot explain electrical effects.

Question

Quizplus · Accepted Answer

The planetary model of the atom, which depicts electrons orbiting the nucleus like planets around the sun, cannot explain the discrete spectral lines observed in atomic spectra. This is because it does not account for the quantized energy levels of electrons, which are necessary to explain the specific wavelengths of light emitted or absorbed by atoms.

One Problem with the Planetary Model of the Atom Is