Question

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

D. V₂O₄ dissolves in acids to give VO\(_4^{3-}\) salts.

E. CrO is basic but Cr₂O₃ is amphoteric.

Choose the correct answer from the options given below:

(1) B and D only

(2) C and D only

(3) B and C only

(4) A and E only

Answer 1

Correct option is (2) C and D only

D → V₂O₅ dissolve in acid to give VO\(_4^{-3}\) salts

This doesn't shown by V₂O₄.