Question

which of the following statements are **incorrect? **
A. All the transition metals except scandium form MO oxides which are iconic
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. V2O4 dissolves in acids to give VO salts
E. CrO is basic but Cr2O3 is amphoteric
Choose the correct answer from the options given below:

• A. B and D only
• B. C and D only
• C. B and C only
• D. A and E only

Answer 1

Answer: (B)

C and D only

Answer 2

C. Basic character increases from V2O3 to V2O4 to V2O5 - incorrect.
D. V2O4 dissolves in acids to give VO salts E. CrO is basic but Cr2O3 is amphoteric - incorrect

The correct option is (B): C and D only