The periodic table - classification of elements. Definitions of groups, periods, alkali metals, alkaline earth metals, halogens, and noble gases. How metals, non-metals, and metalloids can be identified by the position on the periodic table. Created by Jay. Introduction to the periodic table. The periodic table - classification of elements. Groups of the periodic table. Counting valence electrons for main group elements.
OPENBook is software developed for blind and visually impaired individuals to read, edit, and manage scanned images from books, magazines, manuals, bills, newspapers, and other printed documents. It essentially turns your computer system into a scanning and reading machine.
Open Value Subscription (OVS) is a low cost easy way to license all the latest Microsoft software via one simple three year rental agreement. OVS is specifically designed as the optimum licensing solution for companies with 5 to 250 desktops. At the end of the three year agreement customers have the choice to either extend the agreement, buy out the software or discontinue usage.