iron Search Term: IronSource Category: ASSISTIron is the chemical element with the symbol Fe. It has the atomic number 26. It is a member of group 8 on the periodic table and is categorised as a transition metal. Synonyms: iron metal, iron filings; CAS Number: 7439-89-6; Signal Word: None. Tags: Feelement 267439-89-6iron metaliron filings