Question

Write any three postulates of Bohr’s atomic model.

Answer 1

Three postulates of Bohr's atomic model are

1. An atom has a number of stable orbits in which an electron can reside without the emission of radiant energy. Each orbit corresponds, to a certain energy level.

2. An electron may jump spontaneously from one orbit (energy level E₁​) to the other orbit (energy level E₂​) (E₂ ​> E₁​); then the energy change AE​ in the electron jump is given by Planck’s equation.

3.The motion of an electron in a circular orbit is restricted in such a manner that its angular momentum is an integral multiple of h/2π.

Answer 2

Bohr’s Model of an atom, the postulates are 

1. Electrons revolve around the nucleus of an atom in a certain definite path called Orbit or stationary state of shell. 

2. The shells are having different energy levels denoted as K, L, M, N, …… 

3. As long as the electron remains in an orbit, they neither absorb nor emit energy. 

4. The electron can move only in that orbit in which angular momentum is quantized, i.e., the angular momentum of the electron is an integral multiple of h/2π.