JEE · NEET Previous Year Question
Given below are two statements
Statement I : According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised.
Statement II: The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below
Topic: JEE PYQ
Answer: B. Full step-by-step solution below.
- AStatement I is incorrect but Statement II is correct
- BBoth Statement I and Statement II are correct
- CBoth Statement I and Statement II are incorrect
- DStatement I is correct but Statement II is incorrect
Correct answer: B
Solution
(b) According to Bohr's postulates the angular momentum in stationary orbit is quantised and is equal to nh/2, where n is the principal quantum number of the orbit. Bohr's model of the atom assumes fixed orbits and trajectories for the electron. Simultaneously known orbits and trajectories violate the Heisenberg Uncertainty Principle.More Atomic Structure PYQs
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