What did Niels Bohr discover about where electrons can be found?

Answer 1

nothing

Answer 2

Niels Bohr proposed the concept of quantized electron energy levels within atoms, leading to the development of the Bohr model. He found that electrons can only occupy specific energy levels or orbits around the nucleus, and they jump between these levels by absorbing or emitting photons. This provided a more structured understanding of where electrons can be found within an atom.