Physics formula

The first periodic table was devised by Dmitri Mendeleev and published in 1869.The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize, and compare all of the many different forms of chemical behavior. The table has found wide application in chemistry, physics, biology, and engineering, especially chemical engineering. The current standard table contains 117 elements as of July 2009

online table with explanation available at http://www.chemicool.com/ , just click the element you will get the explanation.

you can also learn by read periodic table below

periodic table of the elements -