VSEPR
Why students seem to find determining the shape of a molecule or ion using Valence Shell Electron Pair Repulsion (VSEPR) theory difficult and how you can help them. For some reason students seem to find it very difficult to predict the shape and bond angles of a simple molecule or ion using Valence Shell Electron Pair Repulsion Theory (VSEPR). At first sight this seems strange because the theory really is very...