Question

What is the main difference between the Schrödinger model and the Bohr atomic model?

Schrödinger believed that electrons could only exist in orbits, but Bohr stated that electrons could be found anywhere in the atom.
Bohr believed electron orbits were circular, but Schrödinger’s equations represent complex shapes describing the probable locations of electrons.
The Bohr model did not explain the emission and absorption spectrum, but the energy levels described by Schrödinger explained this property.
Bohr believed that the electrons circle the nucleus because positive particles attract negative particles, while Schrödinger believed that an electron was a wave.

Answer 1

Bohr believed electrons move in fixed circular orbits with quantized energies, while Schrödinger’s wave mechanics gives wavefunctions (orbitals) with complex shapes that give the probable locations of electrons. So option 2.