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Chemistry · Structure of atom

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): An electron can move only in those orbits for which its angular momentum is an integral multiple of \( \frac{h}{2\pi} \). Reason (R): Maxwell's electromagnetic theory allows electrons to move in any arbitrary orbit around the nucleus without radiating energy. In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.

Correct answer · Option 3

(A) is true but (R) is false.

Explanation

Assertion is true based on Bohr's postulate, but Reason is false because Maxwell's theory states that accelerating charged particles radiate energy and would spiral into the nucleus.
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