I don't understand what you mean by valence electrons, and needed.
Sulfur trioxide is a trigonal planar molecule of D3h symmetry, as predicted by VSEPR theory. Sulfur is in +6 oxidation state, surrounded by 6 electron pairs, most of these electrons are non bonding.
http://en.wikipedia.org/wiki/Sulfur_trioxide
Example: Sulfur Trioxide
Chemical formula: SO3
Valence e-: ?
Needed e-: ?
Difference/Bond: ??
Please help me!
1 answer