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

In $\mathrm{PO}_{4}^{3-}$ ion the formal charge on the oxygen atom of $\mathrm{P}-\mathrm{O}$ bond is ___
  1. 0.75
  2. -0.65
  3. -0.75
  4. -0.69

Solution

In $\mathrm{PO}_{4}^{3-}$ ion, formal charge on each $\mathrm{O}$ -atom of $\mathrm{P}-\mathrm{O}$
bond $=\frac{\text { Total charge }}{\text { Number of } \mathrm{O} \text { atom }}=-\frac{3}{4}=-0.75$

Asked in: JEE-TOPICTESTS-CHEMISTRY

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