P,O and Br, has 5, 6 and 7 valence electron, respectively, so we have 32 valance electron
P is center atom
O and Br must have 8 electron around each
the number of electron P have after bonding is: 18 - 1( number of O)x8 - 3(number of Br)x8 = 0
with 4 atoms round it, OPBr3 has tetrahedral geometry
the electron structure of this molecule is
Br
|
O=P-Br
|
Br
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