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Explain the postulates of Bohr’s atomic model.
  
The main postulates are:
  • The revolve around the  in a specific orbit, and these orbits are associated with definite energies called shells or energy levels.
  • The do not emit energy when revolving in a specific orbit.
  • These shells or energy levels or orbits are represented by the letters K, L, M, N or by the numbers \(1, 2, 3, 4\).
  • \((n=l)\) is closest to the nucleus and is associated with the .
  • The energy of each orbit or shell is a fixed quantity and the energy is quantized.