A little background: I'm only a highschool student with some knowledge on Lewis dot structures. And I don't know much about the s orbitals or p orbitals or whatnot. Why are there lone pairs? Shouldn't the electrons repel each other? Why do we draw them as pairs? For example: carbon dioxide is drawn like this Why don't we draw it like or or sulfur dioxide Why not this? Are the drawings just arbitrary and the original used for simplicity's sake? Can all these drawings work?