Question

Describe in brief main postulates of bohr's theory atoms

Answer 1

Bohr's theory explained the stability of the atoms.
It also explained about energy levels.
There are 4 main energy levels - K,L,M,N.
k shell contain 2 electrons .
L shell contain 8 electrons.
M shell contains 18 electrons .
N shell contain 32 electrons.
According to Bohr's theory electrons never gain energy or loss energy.
if electrons gain energy it jumps from lower energy level to higher energy level .

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Answer 2

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Bohr model postulates that electrons orbit the nucleus at fixed energy levels.

Orbits further from the nucleus exist at higher energy levels.

When electrons return to a lower energy level, they emit energy in the form of light.