In $\mathrm{PO}_{4}^{3-}$ ion, the formal charge on the oxygen atom of $\mathrm{P}-\mathrm{O}$ bond

Question

In $\mathrm{PO}_{4}^{3-}$ ion, the formal charge on the oxygen atom of $\mathrm{P}-\mathrm{O}$ bond is\

Professor PC Thomas Classes · Answer

(c) : In $\mathrm{PO}_{4}^{3-}$ ion, the formal charge on each O atom of\ $\mathrm{P}-\mathrm{O}$ bond $=\frac{	ext { Total charge }}{	ext { No. of } \mathrm{O} 	ext { atoms }}=\frac{-3}{4}=-0.75$\