Question

Bhor's model of an atom.
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Answer 1

Answer:

In 1913 Bohrproposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.

Answer 2

Answer:

1) An electron can revolve around the nucleus in certain fixed orbits of definite energy without emission of any radiant energy. Such orbits are called stationary orbits.

2) An electron can make a transition from a stationary state of higher energy E2 to a state of lower energy E1 and in doing so, it emits a single photon of frequency,ν=E2−E1/h where h is the Planck's constant.

Conversely, on absorbing an energy, E2−E1 when the electron is at energy E1, the electron can make a transition from E1 to E2.

3) Only those orbits are allowed for which the angular momentum of the electron is an integral multiple of h2π,Thus, L=nh2π where n=0,1,2,....