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Describe Bohr’s model of the atom.
  
Bohr’s model of the atom:
  • Atom has a in the centre.
  •  revolve around the nucleus.
  • Inside the atom, discrete orbits of electrons are allowed.
  • The  when revolving in discrete orbits.
  • These orbits or shells are called energy levels. These are represented by the letters () or the numbers (\(n = 1, 2, 3, 4\)).