Enlist the postulates of Bohr's atom model.

Explanation

Bohr.s atom is based on the following assumptions :
`implies` The energies of electrons are quantised .
`implies` The electron is revolving around the nucleus in a certain fixed circular path called stationary orbit.
`implies` Electron can revolve only in those orbits in which the angular momentum (mvr) of the electron must be equal to an integral multiple of `h//2pi`.
i.e., `mvr = nh//2pi`
Where `n = 1,2,3...` etc.
`implies` As long as an electron revolves in the fixed stationary orbit, it doesn.t lose its energy. However, when an electron jumps from higher energy state `(E_2)` to a lower energy state `(E_1)` the excess energy is emitted as radiation. The frequency of the emitted radiation is
`E_2 - E_1 = hv`
and
`v = ((E_2 - E_1))/(h)`
`implies ` Conversely, when suitable energy is supplied to an electron, it will jump from lower energy orbit to a higher energy orbit.