Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. When you purchase through links on our site ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Or more precisely, it's inaccurate. One of the biggest changes in decades is set to be made to the periodic table, with the atomic weight of 10 elements altered to better reflect how they occur in ...

Note: In the energy level diagrams, the electrons are spread out evenly ... Have students look for patterns in rows and columns of the first 20 elements in the periodic table. Continue to project the ...

But the periodic table didn’t actually start with Mendeleev. Many had tinkered with arranging the elements ... a small leap from this to the familiar diagram but, years after Mendeleev ...

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

The periodic table of elements (often known simply as the periodic table) has been helping scientists with their work for a little over 150 years. The handy visual reference guide organizes known ...

Carolyn Krause presents the second part of the three-part series on the Oak Ridge National Laboratory's role in the discovery of elements in the periodic table. Many of them have been synthesized ...