Question

How does bohrs quantization rules contradict with hiesenberg uncertainty principle?

Answer 1

Heisenberg's uncertainty principle :- It is impossible to measure simultaneously the exact position and momentum of subatomic particle.That is, the more exactly the position is determined, the less known the momentum, and vice versa. In the Bohr model of the atom the energy (thus its momentum) of the electron and the radius of its orbit (thus its position) are precisely defined quantities. This is a direct violation of the Uncertainty Principle.