d-block Questions

The stability of ${\text{Cu}}^{2+}$ is more than ${\text{Cu}}^{+}$ salts in aqueous solution due to:

Which of the following statements are incorrect?A. All the transition metals except scandium form $\text{MO}$ oxides which are ionic.B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in ${\text{Sc}}_2{\text{O}}_3$ to ${\text{Mn}}_2{\text{O}}_7$.C. Basic character increases from ${\text{V}}_2{\text{O}}_3$ to ${\text{V}}_2{\text{O}}_4$ to ${\text{V}}_2{\text{O}}_5$.D. ${\text{V}}_2{\text{O}}_4$ dissolves in acids to give ${\text{VO}}_4^{3-}$ salts.E. $\text{CrO}$ is basic but ${\text{Cr}}_2{\text{O}}_3$ is amphoteric.Choose the correct answer: