Question

# Assertion :Bond dissociation energy of $$N-F$$ bond in $$NF_{3}$$ molecule is lower than that of in $$NCl_{3}$$ molecule. Reason: Inter electronic repulsion exists between small size N and F atoms in $$N-F$$ bond of $$NF_{3}$$ molecule.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect

Solution

## The correct option is D Both Assertion and Reason are incorrectThe bond dissociation energy of N−F bond in NF3 molecule is lower than that of in NCl3 molecule. the statement is incorrectand Inter electronic repulsion exists between small size N and F atoms in the N−F bond of NF3 molecule. this is incorrectso both assertion and reason is incorrectChemistry

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