Answer:
Trigonal Pyramidal
Explanation:
In PCl₃, between P and Cl, P is the less electronegative atom and so is the central atom. A pair of electron is shared between P and Cl thus forming a P-Cl covalent bond. There are a total of three P-Cl covalent bonds in PCl₃. And since P has 5 valence electrons P has a one lone pair of electron and the three covalent bonds. Also P has three sp³ hybird orbital and one p orbital containing a lone pair of electron. thus the molecular geometry, or shape, of phosphorus trichloride PCl₃ is trigonal pyramidal.
