Electronegativity is often taught as one of those "authoritative" numbers. Someone in authority has measured it, and put it into ...

Here are the main block elements of the periodic table. First thing to note is that the core charge is periodic. Core charge is 1+    2+...

I love these guys. They were only "discovered" a century after the real nobles lost their heads. Lavoisier (and others) were soci...

It only makes sense to say that a table "works" if it can actually do work. The first thing to note about the Ross periodic table ...

Recalling my first experience with the periodic table, reading my mother's high school chemistry texts, it seemed to me that the periodi...

First Light. Is the human race facing increasing challenges? How many of those challenges have some basis in chemistry? Greenhouse gase...