Question

In $P{O}_4^{3-}$the formal charge on each oxygen atom and P − O bond order respectively are

• (A) − 0.75, 0.0
• (B) − 0.75, 1.0
• (C) − 0.75, 1.25
• (D) − 3, 1.25

Answer 1

The Correct Option is C

Explanation:

$P{O}_4^3$ion exist in 4 resonating structures. Bond order of $P{O}_4^{3-}$$=\frac{\text{Nimber of bonds in the species}}{\text{Number of resonating structives}}$$=\frac{5}{4}=1.25$3 negative charges of the ion is being shared by 4 oxygen atoms.$\therefore$ formal charge on an 0 atom $=-\frac{3}{4}$