Question

what is a main difference between the modern atomic model and bohrs planetary model? protons exist in the nucleus, and electrons are in the space outside of the nucleus. all of these are correct. electrons closer to the nucleus have more energy than electrons further from the nucleus. electrons do not orbit the nucleus on fixed pat...

Explanation:

In Bohr's model, electrons orbit the nucleus in fixed paths. In the modern atomic model (quantum - mechanical model), electrons do not have fixed orbits but exist in probability clouds. Protons in the nucleus and electrons outside is common to both. Also, electrons further from the nucleus have more energy in both models.

Answer:

Electrons do not orbit the nucleus on fixed paths.