Question

$S{F}_6$ and $PC{l}_5$ are exceptions to octet rule because of _____.

• A. electron pairs
• B. incomplete octet
• C. odd electrons
• D. expanded octet

Answer 1

The correct option is D

expanded octet

In $PC{l}_5$, P is bonded to 5 Cl atoms which imply that P has 10 electrons.

In $S{F}_6$, S is bonded to 6 F atoms which imply that S has 12 electrons.

Both P and S both have expanded octet.