Home Chemistry Chemical Bonding and Molecular Structure Electrovalent Bonding What are the exceptions of the octet rule?
Chemistry Chemical Bonding and Molecular Structure Electrovalent Bonding Single Correct MCQ
Published on: August 12, 2026

What are the exceptions of the octet rule?

A
The incomplete octet for central atom?
B
An odd number of electrons on central atom
C
Expanded octet of the central atom
D
All of these.

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The correct answer is:
D

According to octet rule, the central atom must have 8 electrons but in some compounds the number of electrons is more than 8, or less than 8 or an odd number of electrons is left on the central atom e.g.,

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