Question

The formal charge on phosphorus atom of phosphoric acid molecule is:​

Answer 1

In all of these the P has a formal charge of 0 and one oxygen is also 0. The last resonance structure expands the P octet to 12, but is not a very good structure because the less electronegative P has a more negative formal charge then some of the O.

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PO43- Step 8.

Total Valence Electrons 32

Remaining 0

Answer 2

Explanation:

Orthophosphoric acid

Formal charge on P atom = 5−(4×2)=12