Which of the following statements are INCORRECT ? A. All the transition metals except scandium form MO oxides which are …

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 \(\mathrm{Sc}_2 \mathrm{O}_3\) to \(\mathrm{Mn}_2 \mathrm{O}_7\).
C. Basic character increases from \(\mathrm{V}_2 \mathrm{O}_3\) to \(\mathrm{V}_2 \mathrm{O}_4\) to \(\mathrm{V}_2 \mathrm{O}_5\).
D. \(\mathrm{V}_2 \mathrm{O}_4\) dissolves in acids to give \(\mathrm{VO}_4^{3-}\) salts.
E. \(\mathrm{CrO}\) is basic but \(\mathrm{Cr}_2 \mathrm{O}_3\) is amphoteric.

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