Technetium
Technetium is a chemical element with symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive; none are stable, excluding the fully ionized state of 97Tc.
Wikipedia
https://en.wikipedia.org/wiki/Technetium
Added to support Critical Zone Observatory (CZO) data use cases.
ODM2 Variable Name Controlled Vocabulary
ODM2 Working Group
A vocabulary for describing the name of Variables.