[" 16.The basic character of the transition "],[" metal monoxide follows the order: "],[" (At.no."Ti=22,V=23,Cr=24,Fe=26)],[" (a) "VO>CrO>TiO>FeO],[" (b) "CrO>VO>FeO>TiO],[" (c) TiO > "FeO>VO>CrO],[" (d) "TiO>VO>CrO>FeO]