Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-fact-Hard-Class 11
Which of the following statements correctly describes an exception to the octet rule?
A
BCl3 has an incomplete octet due to boron having three valence electrons.
B
Nitric oxide has a complete octet due to its odd number of electrons.
C
LiCl follows the octet rule as both lithium and chlorine achieve eight electrons.
D
AlCl3 has a complete octet as aluminum shares three pairs of electrons.
Correct Answer
Option A
Detailed Explanation
BCl3 is an example of a molecule that has an incomplete octet, as boron has only three valence electrons, making it less than eight around the central atom. This aligns with the exceptions to the octet rule mentioned in the NCERT context.
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