YEAR POSTED: 2009 The Periodic Table of Elements is a specific table for organizing the various elements found, yet to be found, created, and yet to be created in the known universe. Currently, there are over 115 known chemical elements; 117 known-to-exist to be exact. Many scientists have even predicted more elements where missing elements should be occupying the periodic table, such as the undiscovered Unonseptium, chemical element 117.