what are the postulates of bohr' s atomic model
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Postulates of Niels Bohr Atomic Theory. 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 changes only when it moves from one orbit to another.
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1) Electrons can revolve around the nucleus in circular stationary, stable orbits without radiating energy.
2) These orbits have discrete and fixed energies, and the angular momentum of an electron in these stationary orbits must be an integral multiple of h/2pi, where h is the plancks constant.
3) Electrons can excite from a lower energy orbital to a higher one, and during de excitation, will release a photon equal to the energy gap between these two orbits.
2) These orbits have discrete and fixed energies, and the angular momentum of an electron in these stationary orbits must be an integral multiple of h/2pi, where h is the plancks constant.
3) Electrons can excite from a lower energy orbital to a higher one, and during de excitation, will release a photon equal to the energy gap between these two orbits.
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