S-group attachment points are considered as bonds. Three cases are possible:
There is one S-group attachment point around the investigated atom, that abbreviates one single bond;
There are two S-group attachment points around the investigated atom, both of them abbreviate one single bond;
There is one S-group attachment point around the investigated atom, that abbreviates one double bond.
If valence property is set, then the Valence Calculator uses that value, v , as the number of bond order.
Default: AH v
Ions and Radicals: According to the definition of the valence property, charge and radical is not taken into account when the valence is calculated.
Special atoms are not handled by the valence calculator.