Single-Element Compound

Huh? Not when I was going to school.

Florida International University researchers have helped discover a new single-element compound, a breakthrough that could rewrite chemistry books.

An international group of scientists, led by FIU's Center for the Study of Matters at Extreme Condition, synthesized and characterized a single-element compound, Boron Boride (B28). [...]

Until now, the classic definition of a chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by mass.

But the new compound differs from that definition in that it is made up of just one element, formed by pure boron under high pressure and temperature.

In all candor, I thought chemistry books needed rewriting when I was a student. Mine was in Greek.

The research was funded by the government.