The central atom has two bonded atoms and at least one lone pair
The molecule has a V-shaped arrangement around the central atom
The electron geometry is tetrahedral with one or two lone pairs on the central atom
The electron geometry is trigonal bipyramidal with lone pairs causing a non-linear shape
The electron geometry is octahedral with lone pairs causing a non-linear shape
The central atom is not bonded to atoms in a straight line
The Lewis structure shows bond angles less than 180 degrees around the central atom
Common examples include H2O, SO2, and NO2-