In 1913 Neils Bohr, a student of Rutherford proposed to account for the shortcomings of Rutherford's model. Bohr's model can be understood in terms of two postulates proposed by him. The postulates are:
Postulate 1 - The electrons move in definite circular paths of fixed energy around a central nucleus; just like our solar system in which different planets revolve around the sun in definite trajectory. The paths are called ORBITS or energy level. The electrons move in the orbit and they does not radiate. means it does not lose energy.
Postulate 2 i dont know but i am giving u a image that will support u to understand....
