What is a quantum jump and how does it relate to Bohr's atomic model

Question

 need to know how does the quantum jump and bohrs atomic model relate

Answer 1

A quantum jump consists of an electron jumping from one allowed orbit around the nucleus of an atom to another allowed orbit.  For the hydrogen atom, Bohr calculated the allowed energies of electron orbits around the proton.  A quantum jump from one allowed orbit to another allowed orbit of higher energy occurs when the electron absorbs a quantum of electromagnetic radiation with energy equal to the difference in the energies of the allowed orbits.  A quantum jump from one allowed orbit to another allowed orbit of lower energy occurs when the electron emits a quantum of electromagnetic radiation with energy equal to the difference in the energies of the allowed orbits.

 

By the way, what Bohr really theorized was that the angular momenta of the orbits are quantized, leading to quantization of the orbital energies.  From that, the allowed radii of the orbits follows.