GENERAL KNOWLEDGE

Detailed explanation-1: -The postulates given by Neils Bohr are: Electrons revolve around the nucleus in a fixed circular path termed “orbits ‘’ or “shells” or “energy level.” The orbits are termed as “stationary orbit.” Every circular orbit will have a certain amount of fixed energy and these circular orbits were termed orbital shells.

Detailed explanation-2: -According to Bohr’s theory, the electrons revolve round the nucleus in definite paths called orbits .

Detailed explanation-3: -According to Bohr’s model, an electron would absorb energy in the form of photons to get excited to a higher energy level as long as the photon’s energy was equal to the energy difference between the initial and final energy levels.

Detailed explanation-4: -Using Planck’s constant, Bohr obtained an accurate formula for the energy levels of the hydrogen atom. He postulated that the angular momentum of the electron is quantized–i.e., it can have only discrete values.

Detailed explanation-5: -In 1913 Bohr proposed his quantized shell model of the atom (see Bohr atomic model) to explain how electrons can have stable orbits around the nucleus.