1.

write 5 Bohr's postulate ?

Answer»

Postulates of Bohr's atomic model :

According to Bohr's theory , electrons revolve in definite circular orbits around the nucleus and these orbits are designated by the letters K, L, M, N or by the numbers 1, 2 ,3, 4 and so on.

As long as the electrons revolve in a particular orbit they can neither gain energy nor loose energy. Such orbits are called as stationary orbits or stationary states.

When an electron jumps from an higher orbit to a lower orbit it releases energy in the form of raldiations and when an electron jumps from lower orbit to a higher orbit it absorbs energy in the form of raldiations.

The angular momentum of aln electron is an integral multiple of h/ 2π mvr = nh/ 2π

It explains the stability of an atom and also the line spectrum of hydrogen atom



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