An electron group can be an electron pair, a lone pair, a single unpaired electron, a double bond or a triple bond on the center atom. VSEPR focuses not only on electron pairs, but it also focus on electron groups as a whole. Thus, electron pairs will spread themselves as far from each other as possible to minimize repulsion.
The valence-shell electron-pair repulsion (VSEPR) theory states that electron pairs repel each other whether or not they are in bond pairs or in lone pairs.
Now that we have a background in the Lewis electron dot structure we can use it to locate the the valence electrons of the center atom.
Valence-Shell Electron-Pair Repulsion Theory
