Discover the history, structure, and importance of the periodic table ... first column or group of the table and tend to have one valence electron and so carry a charge of +1.

In their momentary life span, atoms of lawrencium, element 103, may have left a lasting impression on the structure of the periodic table. For the first time, researchers have measured a basic ...

(Credit: University of California Television) The scientific body in charge of chemistry’s periodic table has verified the discoveries of four elements – completing the seventh row of the ...