Question

postulates of Neil Bohr model

Answer 1

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 in a certain orbit remains constant.

Answer 2

The different energy levels are numbered as 1,2,3.....etc or designed as K,L,M,N,O,P .....etc starting from the shell closest to the nucleus● Like energy ,the angular momentum of an electron in an atom can have certain definate values or discrete values and not any value of its own. The only permissible values of angular momentum are given by the following expression :-here m is the mass of the Electron, v is the tangential velocity of revolving electron ,r is the radius of the orbit ,h is the Planck's constant and n is the integer.● When the electrons in an atom are in their Lowest (normal ) energy level or State ,they keep on revolving in Thier respective Orbits without losing energy beacause energy can neither be lost nor gained continuously . This state is called normal or ground state.

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