In PO43- , the formal charge on each oxygen atom and the P - O bond order respectively are

Question

In PO43- , the formal charge on each oxygen atom and the P - O bond order respectively are (A) -0.75, 0.6 (B) -0.75, 1.0 (C) -0.75, 1.25 (D) -3, 1.25

Tardigrade Admin · Accepted Answer

Bond order =( text Number of bonds / text Number of Resonating structures ) =(5/4)=1.25 Three unit negative charge is being shared by four O atoms. Formal charge =-3 / 4

Q. In $P O_{4}^{3 -},$ the formal charge on each oxygen atom and the $P - O$ bond order respectively are

-0.75, 0.6

-0.75, 1.0

-0.75, 1.25

-3, 1.25

Bond order $= \frac{Number of bonds}{Number of Resonating structures}$
$= \frac{5}{4} = 1.25$
Three unit negative charge is being shared by four $O$ atoms.
Formal charge $= - 3/4$

Q. In PO43−​, the formal charge on each oxygen atom and the P−O bond order respectively are