Sources of rare earth elements are frequently associated with volcanoes, dormant or otherwise. Here on Earth, rare-earth ...

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 ...

In addition to the potential for mining valuable rare earth metals, scientists are eager to learn more about their impacts to human health and aquatic environments. There are no state or federal water ...

So-called rare earth elements are those occupying element numbers from 57 to 71 on the standard periodic table. They come with names like lanthanum (La), cerium (Ce), praseodymium (Pr), and the ...

See how many you get correct on this quiz of the periodic table of elements. Do you know what element Mg is? Mg stands for ...

Is the periodic table hanging in your lab ... in 1937 when Italians Carlo Perrier and Emilio Segrè synthesized technetium. Separaton of Rare Earth Elements by Charles James Charles James, a chemistry ...

Ten new entries on the periodic table and almost a hundred years later, scientists were still finding new rare-earth elements in the same nondescript black rocks. Because of their optical ...