The Periodic Table of the Elements’ Natural Sources

There are thousands of different periodic tables in existence. Aside from the usual ones that offer atomic masses and numbers, for a long time we have had those that revealed various periodic trends. In more recent years, some have focused on their time or place of discovery, on cosmic origins of the elements, and even... Continue Reading →

Science: Larger than Economics, Smaller than Life

A month ago, almost 40 years later, I decided to resume something I started in high school and memorized the entire periodic table, an entirely useless feat. It started in the 1970s as an extension of a chemistry course requirement. We had to know the names, symbols and atomic numbers of the first twenty elements. So I decided to carry it a... Continue Reading →

Poisonous Neighborhoods of the Periodic Table

In describing the periodic table's regions of related elements in Periodic Kingdoms,  P.W. Atkins drops the dry tone of textbooks and reaches for a little imagery.The kingdom is not an amorphous jumble of regions, but a closely organized state in which the character of one region is close to that of its neighbour. There are few sharp boundaries. Rather the landscape is... Continue Reading →

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