(D) The main postulate of Bohr's model is that the electron can move only in those circular orbits where its angular momentum is an integral multiple

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Angular momentum of electron is an integral multiple of $\frac{h}{2\pi}$

(D) The main postulate of Bohr's model is that the electron can move only in those circular orbits where its angular momentum is an integral multiple of $\frac{h}{2\pi}$.This is expressed as $mvr = n \frac{h}{2\pi}$,where $n = 1, 2, 3, ...$ (an integer).

Class 11 Chemistry Structure of Atom Atomic models and Planck's quantum theory

Medium

Which one of the following is considered as the main postulate of Bohr’s model of atom?

A
Protons are present in the nucleus
B
Electrons are revolving around the nucleus
C
Centrifugal force produced due to the revolving electrons balances the force of attraction between the electron and the protons
D
Angular momentum of electron is an integral multiple of $\frac{h}{2\pi}$