This year is the International Year of the Periodic Table of Chemical Elements—and today (March 6), the modern version celebrates its 150 th birthday. To find out more about the table and how new ...

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I highly recommend Wonderful Life with the Elements as a companion to the science classroom. Our world, everything we know, can be distilled into 188 elements. The very thought is fascinating in its ...

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...