Question

The basic character of the transition metal monoxides follows the order 

(a) VO > CrO > TiO > FeO 

(b) CrO > VO > FeO > TiO 

(c) TiO > FeO > VO > CrO 

(d) TiO > VO > CrO > FeO

Answer 1

Correct option (d)

Explanation:

Metal oxide with more ionic character will be more basic. Ionic radii of metal ion decreases from Ti²⁺ to Fe²⁺, the basic character of their metal oxides decrease from TiO to FeO. Thus, order of basic character is TiO > VO > CrO > FeO.