Question

write down the Bohr's postulates of atomic theory .

Answer 1

In 1913, Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted.

Niels Bohr - 

Answer 2

●He successfully explained the stability of atom
●He successfully explained hydrogen i. e, single electron spectra.
●when an electron jumps from a lower energy state to higher energy state it absorbs or emits energy.
●According to bohr electrons revolve around the nucleus in circular paths called orbits.
●In that orbits electrons neither gain nor lose energy.
●So the orbits are called stationary orbits.
●Energy of each and every orbit is constant so they are called energy levels.
●Electrons gain and lose energy in the form of electromagnetic radiation.



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