Preferred Label : protactinium;
RADLEX synonyms : PA;
Definition : Protactinium. A radioactive element of the actinide group of metals. It has the atomic
symbol Pa, atomic number 91, and atomic weight 231. It decays by alpha-emission. [MeSH];
UMLS CUI (RADLEX) : C0033597;
Origin ID : RID11942;
UMLS CUI : C0033597;
Semantic type(s)
Protactinium. A radioactive element of the actinide group of metals. It has the atomic
symbol Pa, atomic number 91, and atomic weight 231. It decays by alpha-emission. [MeSH]
