;Fe;Pt;Ti;Mt;Ta I;"3d 2p 1r";–;3-3v;3-3v;– II;"3d 3p 1r";1p;"2p 3-3v";"3p 3-3v";– III;"3d 2p 2r";"1d1p 1r";"1d 2p 2r 3-3v";"5p 5r 3-3v";"1p 1r" IV;"3d 1p 1r";"1p 1r";"2p 2r 3-3v";"5p 5r 3-3v";"2p 1r"