Which of the following statements are incorrect?
(A) All the transition metals except scandium form MO oxides which are ionic.
(B) The highest oxidation number corresponding to the group number in transition metal oxides is attained in Sc₂O₃ to Mn₂O₇.
(C) Basic character increases from V₂O₃ to V₂O₄ to V₂O₅.
(D) V₂O₄dissolves in acids to give salts.
(E) CrO is basic but Cr₂O₃is amphoteric.

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B and D only

C and D only

A and E only

B and C only

answer is A.

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Detailed Solution

In vanadium, there is gradual change of basic character from the basic V₂O₃ to less basic V₂O₄ and to amphoteric V₂O₅.

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