Q.

Bohr’s concept of the orbit in an atom was contradicted by

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a

De Broglie relationship

b

Uncertainty principle

c

Planck’s hypothesis

d

Hund’s rule

answer is B.

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Detailed Solution

According to Bohr’s model of an atom the energy levels are with discrete amount of energy. Hence, the position of electron in the Bohr orbit should have fixed energy. But this statement is most contradicted with Heisenberg uncertainty principle (It is not possible to know the exact position and momentum of an electron simultaneously).  

E=nhν ; Here, n=1,2,3,4....

Δx. m Δvh/4π

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