(i) Stationary Circular Orbits: An electron in an atom could revolve in certain stable orbits without the emission of radiant energy called Stationary orbits.
ii) Quantum Condition: Electron revolves around the nucleus only in those orbits for which the angular momentum is some integral multiple of \(\frac{h}{2\pi}\)
(That is L = \(\frac{nh}{2\pi} )(L =mvr)\)
iii) Transitions: Electron emits energy only when they jumps from stationary orbit of higher energy level to lower energy level. i.e.\(hv=E_2-E_1\)
