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In PO(4)^(3-) ion, the formal charge on ...

In `PO_(4)^(3-)` ion, the formal charge on the oxygen atom of P - O bond is

A

`-0.75, 0.6`

B

`-0.75 , 1.0`

C

`-0.75, 1.25`

D

`-3,1.25`

Text Solution

Verified by Experts

The correct Answer is:
C
P-O bond order
`="Total Number of bonds in all possible direction between two atoms"/"Total number of resonating structures"`
`=(2+1+1+1)/4=5/4=1.25`
`therefore` Bond order =1.25
Resonating structures are

Total charge on `PO_4^(3-)` ion is -3 =`"Total charge"/"Total entity of O-atom"`
So, the average formal charge on each O-atom is =`-3/4=-0.75`
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