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The basic character of the transition metal monoxide is TiO > VO > CrO > FeO because basic character of oxides decrease with increase in atomic number.

1. TiO > VO > CrO > FeO
2. VO > TiO > FeO > CrO
3. FeO > CrO > VO > TiO
4. CrO > FeO > VO > TiO

Correct answer: TiO > VO > CrO > FeO

Solution

The basic character of transition metal monoxides decreases as the atomic number increases because the metallic character decreases, leading to less basic oxides. Hence, TiO > VO > CrO > FeO.

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