Describe bohr's model of the atom. How did Niels Bohr explain the stability of atom?

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Solution

Niels Bohr proposed the following postulates regarding the model of the atom:

(i) Only certain orbits known as discrete orbits of electrons are allowed inside the atom.
(ii) While revolving in these discrete orbits, the electrons do not radiate energy.

These discrete orbits or shells are shown in the following diagram:

Bohr explained the stability of atom by proposing that electrons revolve around the nucleus in the definite circular paths having fixed energy and while moving in the same orbit they do not lose or gain energy.

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