/ RDLs / ISO 15926 Part 4: Core reference data - Edition 4 / PROTACTINIUM

PROTACTINIUM

Class
Identifier
https://posccaesar.org/ontology/15926-4/4.0/PROTACTINIUM
Definition A <PROTACTINIUM> is an <Atom> and a <CHEMICAL ELEMENT> with symbol Pa and atomic number 91.It belongs to the actinide series