Since Dimitri Mendeleev formulated the periodic law in 1871, and published an associated periodic table of chemical elements, authors have experimented with varying types of periodic tables including ...

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The last, in particular, would interest chemists as a new addition to the periodic table; it also sparked a flurry of activity in medicine. Radium, the Curies found, destroyed diseased cells ...

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There is a theory in nuclear physics about an island of stability of superheavy elements. This is a potential zone in the upper part of the periodic table of as-yet-undiscovered elements that could ...

Pb is the symbol for lead on the Periodic Table. The word plumbing comes from plumbum, the Latin word for lead. Ancient Rome developed water systems using lead pipes, which included bringing water ...

The only rare earth element the XRF could pick up was yttrium -- "Y" on the periodic table -- but since the elements tend to travel in groups, the parts per million of yttrium can be multiplied ...