Name: Bohr Atom Model: Frequency of Emitted Radiation
Uploaded: 2019-07-19
Duration: 3 min 54 s
Description: Electrons jump in different energy levels. Let's understand how we can calculate the frequency of emitted and absorbed radiation as electrons transition into...

Question

Write any two postulates of Bohr's model of hydrogen atom.

Accepted Answer

The postulate of Bohr's model of the hydrogen atoms are:
Postulate 1 : The electron in a hydrogen atom revolves in circular orbit around the nucleus with nucleus at the centre of orbit. The necessary centripetal force for circular motion is provided by electrostatic force of attraction between the positively charged nucleus and negatively charged electron. The shells are having different energy levels denoted as $K, L, M, N$ .

Postulate 2:
The electron revolves around the nucleus only in those orbits for which the angular momentum is equal to an integral multiple of $\frac{h}{2 π}$ , where h is Planck’s constant. These orbits are called stable or stationary (or permitted or quantized or Bohr orbits) and electron does not radiate energy whole revolving in these orbits i.e. its energy remains constant and hence stability of atomic structure.

Write any two postulates of Bohr's model of hydrogen atom.

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