Question Detail

CHM 102 Practice Questions Objective Question
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Question

Which of the following is a planar molecule?
Options
A Formaldehyde
Correct Answer
B Acetone
C Formic acid
D Acetic acid
Correct Answer

Option A is the correct answer.

Detailed Explanation

Formaldehyde (H2C=O) has a carbonyl carbon which is sp2 hybridized, giving it a trigonal planar geometry. The entire molecule is planar. Acetone and acetic acid have tetrahedral carbons (sp3) in the methyl group, making them non-planar overall.

Hint

Consider the hybridization of the central carbon atom in each molecule.

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 930 of 1999
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