Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question

Question

In UV-Vis spectroscopy, what does n→π* transition refer to?
Options
A Transition from a bonding π orbital to antibonding π* orbital
B Transition from a non-bonding orbital (lone pair) to antibonding π* orbital
Correct Answer
C Transition from σ to σ*
D Transition from π to σ*
Correct Answer

Option B is the correct answer.

Detailed Explanation

n→π* transitions occur in carbonyl compounds and other molecules with lone pairs, involving promotion of an electron from a non-bonding orbital to an antibonding π orbital.

Hint

Lone pair to π*.

Question Info