Question

A valid lewis structure of ______ cannot be drawn without violating the octet rule

Answer 1

The Lewis structure of $Cl{F}_3$ is :Valence electrons in $Cl=10$

The Lewis structure of $PC{l}_3$ is :Valence electrons in $P=8$

The Lewis structure of $CC{l}_4$ is :Valence electrons in $C=8$

The central atom, chlorine of $Cl{F}_3$ has $10$ electrons in its valence shell and forms an expanded octet and hence violates the octet rule. Whereas, all the other three, that is $CC{l}_4\text{and}PC{l}_3$ have $8$ electrons in its valence shell and thus completes its octet.

The correct option is B $Cl{F}_3$.