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1 Nitrogen family elements often form covalent compounds, usually with the oxidation numbers +3 or +5. 2  Nitrogen and phosphorus are nonmetals. 3  Arsenic and antimony are metalloids. 4  Bismuth is a metal.
What element family does the element iron belong to? The element family that iron belongs to on the periodic table is the transition metals family. Other elements in this family include cobalt and nickel. Edit