Add to ORKGAn interactive version of the Periodic Table of the Elements. Each element is linked to a wealth of information concerning basic chemical properties, as well as short descriptions of its history, sources, compounds, uses, and isotopes. The table can be downloaded in PDF format. Other pages explain the purpose and use of the Periodic Table, and how new elements are named. A version of Mendeleev's original Periodic Table is displayed, and a description of Chemistry is given in a "nutshell". Links to the Department of Energy and Los Alamos National Laboratory are also provided. Educational levels: Graduate or professional, High school, Intermediate elementary, Middle school, Undergraduate lower division, Undergraduate upper division