Which of the molecule is hypovalent but has complete octet?

CHEMISTRY · Single correct · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties

Problem

Which of the molecule is hypovalent but has complete octet? (1)

\text{AlCl}_3

(2)

\text{PH}_3

(3)

\text{PCl}_3

(4)

\text{SF}_4