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 \[\frac{h}{2\pi }\]
Correct Answer: D
Solution :
The electron can move only in these circular orbits where the angular momentum is a whole number multiple of \[\frac{h}{2\pi }\] or it is quantised.
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