Which of These Compounds Does Not Follow the Octet Rule

question 82

Multiple Choice

Which of these compounds does not follow the octet rule?

• A) PF₅
• B) HF
• C) NF₃
• D) AsCl₃
• E) CF₄

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Definitions:

Aromatic Ring

A cyclic molecule with conjugated pi electrons that exhibits enhanced stability, typified by the benzene ring.

Deactivator

A chemical group or substituent attached to an aromatic ring that decreases its reactivity in electrophilic aromatic substitution reactions.

Friedel-Crafts Acylation

A chemical reaction that introduces an acyl group into an aromatic ring, facilitated by a Lewis acid catalyst, used in synthetic chemistry.

Benzophenone

An organic compound used primarily as a photoinitiator in polymer chemistry and as a flavor or fragrance additive, characterized by its ketone attached to two benzene rings.