Give the essential postulates of Bohr's ...

Give the essential postulates of Bohr's model of an atom. How did it explain.
(i) the stability of a atom
(ii) origin of spectral lines in hydrogen atom ?

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`1s^2 2s^2 2p^6 3s^2, 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2, 1s^2 2s^2 2p^6 4s^1 3d^5, 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^(10) 4p^5`.

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Number of spectral lines in hydrogen atom is

`3`

`6`

`15`

Infinite

the radius of nth orbit is proportional to `n^(2)`

the total energy of electron in nth orbit is proportional to `n`

the amgular momentum of the electron in an orbit is an integral multiple of `h//2 pi`

the magnitude of the potential energy of an electron in any orbit is greater than its kinetic energy

only the spectrum of hydrogen atom

only spectrum of an atom or ion containing one electron

spectrum of hydrogen molecule

the solar spectrum