Postulates of Bohrs Theory

Energy is however emitted or absorbed by an atom, when an electron jumps fi om one energy level to the other. The amount of energy (AE) emitted or absorbed in this type 

Although there are infinite number of circular concentric orbits in which an electron may be expected to move about the nucleus, the electron can move only in that orbit in which the angular momentum of the electron is quantised i.e. the angular momentum 

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