Q34 / 105 · NTA Abhyas (JEE Main) 2020 · Chemistry · d and f Block Elements

The basic character of the transition metal monoxides follows the order

(Atomic numbers Ti = 22, V = 23, Cr = 24, Fe = 26)

  • A
    VO>CrO>TiO>FeO
  • B
    CrO>VO>FeO>TiO
  • C
    TiO>FeO>VO>CrO
  • Correct answer
    D
    TiO>VO>CrO>FeO

Solution

Oxides of transition metals in low oxidation states +2 and +3 (MO, M3O4 and M2O3 ) are generally basic except Cr2O3 which is amphoteric in character.

Hence, the correct answer is option: 'D'.

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