write the important postulate of bhor model
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:The important postulates in his theory are, Electrons revolve round the nucleus with definite velocities in concentric circular orbits situated at definite distances from the nucleus. The energy of an electron in a certain orbit remains constant. ... Bohr proposed that the angular momentum of an electron is quantized.
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In an atom, electrons (negatively charged) revolve around the positively charged nucleus in a definite circular path called as orbits or shells. ... This range of quantum number starts from nucleus side with n=1 having the lowest energy level.
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