The Periodic Table of Matter-AntiMatter Elements
www.matter-antimatter.com/periodic_table.htm is similar to the existing Periodic Table except it has twice as many elements. Each symbol represent a matter and antimatter element. There are 218 elements: 109 matter plus 109 antimatter elements. Super-symmetry exist among the matter and antimatter elements. The antimatter elements are named after their respective matter elements and have very similar nuclear, physical, and chemical properties. The superscript A before the element or symbol indicates that it is antimatter. For example, hydrogen & oxygen are Ahydrogen & Aoxygen respectively.

see www.matter-antimatter.com/what_is_matter.htm & www.matter-antimatter.com/periodic_table.htm