This tag should be applied to questions about structural diagrams - diagrams used to show the crude location of possible existent bonds and lone pairs of electrons in a chemical species. Do not use this tag if your question is about Lewis structures, use [lewis-structures] instead.
These are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.
Please see lewis-structure if you have a question involving the use of lewis structures. It's preferable not to include this tag where you've already applied lewis-structures.