The Lewis Structure of Phosphoryl triiodide with each element having minimum formal charge is shown below,..
In this structure all elements have zero formal charge.
As, Formal charge is given as,,
Formal Charge = # of Valence e⁻s - [ e⁻s in lone pairs + 1/2 bonding e⁻s]
For P,
Formal Charge = 5 - 0 + 10/2 = 0
For O,
Formal Charge = 6 - 4 + 4/2 = 0
For I,
Formal Charge = 7 - 6 + 2/2 = 0
