Answer:
The main points of Bohr's atomic model are:
•The electrons revolve around the nucleus in circular paths called orbits or energy shells.
• The orbits or energy shells are associated with definite energy. Therefore, they are called energy levels. Starting from the innermost energy shell, these shells are represented by numbers 1, 2, 3, 4 and so on or symbols K, L, M, N and so on .
• Different orbits possess different energies.
• The energy of an orbit increases as it moves away from the nucleus.
• The energy difference between one orbit and another orbit is constant.