KS9015 fx3 Orbital"fx3" Orbital Orbital models were designed to demonstrate the angular distribution of the "s", "p", "d" and "f" orbitals and to show how these models may be used to illustrate a number of aspects of molecular orbital and crystal field theories. It is hoped that three dimensional models will help students to understand ideas that many of them find difficult to visualize from two dimensional drawings in textbooks. This model is hand made in the USA by