Question

State the Bohr's postulate of angular momentum of an electron.

Answer 1

The angular momentum postulate proposed by Bohr argues that electrons can only rotate in orbits when their angular momentum is an integral multiple of `h/(2pi)` where h is Planck's universal constant.

Given an electron with mass 'm' and orbital velocity 'v', it can be explained using Bohr's postulate.

`mvr = (nh)/(2pi)`

Here n is an integer (n = 1, 2, 3.....) and is called the 'principal quantum number' of the orbit.