How do draw Lewis structure for IBr3?
Br - I - Br
A couple problems with this question: 1. There is no such compound as NaCl3. 2. Sodium is an alkali metal and Cl is a halogen, and the two would always form the ionic compound NaCl, not a covalent compound. You cannot draw Lewis structures for ionic compounds. You can draw Lewis electron diagrams for the individual ions (Na+ and Cl-), but not a structure for the ionic compound.
It should be sp3d. first draw the Lewis structure. then you can see the central S atom has 4 bonding pair and 1 lone pair. then draw molecular orbital. Distribute electron according the bonding and lone pair. the paired electron represent lone pair in Lewis structure. and the other unpaired electron distribute in the molecular orbital represent the number of bonding pair in Lewis structure