Asked in FBISE Chemistry 2023 — Paper 1 2023

Which of the following electronic transitions requires highest amount of energy when a compound is interacted with ultraviolet radiations?

Correct answer: D. n → 8

  • A. n → Π
  • B. Π → Π
  • C. 8 → 8
  • D. n → 8

Explanation

This transition involves the excitation of an electron from a non-bonding orbital (n) to another orbital (8). If 8 represents a higher energy orbital, this transition could require a significant amount of energy, potentially more than the other transitions listed, depending on the specific molecular orbitals involved.

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