Draw the Lewis structure
Count the number of electron domains around the central atom
Count each bond as one electron domain
Count each lone pair as one electron domain
Ignore single, double, and triple bond differences for electron geometry
Use the total number of electron domains to determine the electron geometry
2 electron domains: linear
3 electron domains: trigonal planar
4 electron domains: tetrahedral
5 electron domains: trigonal bipyramidal
6 electron domains: octahedral