Magnumium PI

From Memory Alpha, the free Star Trek reference

Name:	Magnumium PI
Symbol:	Mg
Atomic Number:	Unknown
Atomic Weight:	12

Magnumium PI is a chemical element listed on the Table of Elements. (TNG: "Rascals")

The element Magnumium PI had the symbol "Mg" which is the same atomic symbol used for Magnesium. It is named after the television show "Magnum PI."