Question

$PC{l}_5$ is formed but $NC{l}_5$ is not.

• A. True
• B. False

Answer 1

The correct option is A True

$NC{l}_5$ does not exist because there are no $d-$ orbitals in the second energy level in nitrogen atom.

Therefore there is no way to arrange five pairs of bonding electrons around the Nitrogen atom.

$PC{l}_5$

forms five bonds by using the $d-$ orbitals to "expand the (octet)"

and have more places to put Bonding pair of phosphoryl chloride.