The Bohr model of the atom was proposed by Neil Bohr in 1915. Quantum model explains the wave-particle duality of an electron. Endothermic Vs Exothermic Reactions Powerpoint Exothermic Reaction Conservation Of Mass Chemical Changes When electrons jump from a higher energy level to a lower one they emit light at a wavelength that corresponds to the energy difference between the levels. . Bohr model can be applied for hydrogen atom but not for large atoms. In the Bohr model an electrons position is known precisely because it orbits the nucleus in a fixed path. Bohrs Model of an Atom. In the electron cloud model the electrons position cannot be known precisely. What is Bohr Model. Describe how the Bohr model explains both of these observations. It came into existence with the modification of Rutherfords model of an atom. Bohrs model treats electron energy levels as clearly defined orbital paths around the nuc...