Modern Chemistry, Lesson 148: Determining Structures - a Simple Approach

One of the striking developments of this century has been the use of x-rays to establish the arrangement of atoms, molecules, and ions in crystals. Presents an analogy in two dimensions. Shows a powder camera used in x-ray diffraction studies. Shows the x-ray diffraction patterns for five different substances taken in such a camera. Also shown are models of some common atomic and ionic substances.