NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

Option B (${M}_3\left({PO}_4\right)_2$) is correct because if the metal chloride is ${MCl}_2$, then the metal has a +2 charge ($M^{2+}$). To balance the -3 charge of two phosphate ions ($2PO_4^{3-}$), three metal ions are required.