Shape and Electronic Geometry

When drawing the Lewis Structure of different elements and compounds, the structure has a shape and a geometry. The shape of the structure is determined by the number of bonds and direction of them about the central element as well as the number of lone pairs. The electronic geometry is determined the number of electronic domains around the central element.

Combining the two: http://intro.chem.okstate.edu/1314f00/lecture/chapter10/vsepr.html

Shape explanation: This site gives some background on the different shapes of the structures. http://www.smc.edu/projects/28/Chemistry_10_Experiments/Ch10_Molecular_Shapes.pdf

Here is an example of water, its shape is bent:

Electronic geometry explanation: https://ch301.cm.utexas.edu/help/ch301/geometries.pdf

Here is an example of H2O, its geometry is tetrahedral (this is because of the four different regions shown in the bottom left picture):