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Question
State Bohr's second postulate for the atomic model. Express it in its mathematical form.
Solution
Bohr’s second postulate:
The radius of the orbit of an electron can only take certain fixed values such that the angular momentum of the electron in these orbits is an integral multiple of `h/(2π)`, h being Planck’s constant.
Mathematical form: mernvn = `"nh"/(2pi)`
where, me = mass of electron, rn = radius of nth Bohr’s orbit, vn = linear velocity of electron in nth orbit, n = principal quantum number.
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