AIIMS2019Chemistry-Atomic Structure

AIIMS 2019 Chemistry Bohr's Model MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Assertion : In absorption spectrum, nf>nin_f > n_i, while in emission spectrum, nf>nin_f > n_i

Reason : Energy is limited in absorption spectrum, that is, electron moves from lower to higher orbit and energy is absorbed in emission spectrum, because election jumps from higher to lower orbit.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Correct Answer

Option D

Detailed Explanation

When an electron transitions from a higher energy level (or orbit) to a lower one, it emits energy in the form of a photon, which corresponds to the energy difference between the two levels. Conversely, when an electron moves from a lower energy level to a higher one, it must absorb energy. This process is fundamental to quantum mechanics and is described by the Bohr model of the atom, where energy levels are quantized. The other options are not relevant as they do not provide any alternative explanations or correct statements regarding electron transitions.

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