Question

I. As the oxidation number of a metal increases, ionic character decreases.
II. In case of $Mn,M{n}_2{O}_7$ is a covalent green oil which possess predominantly acidic character and it gives $HMn{O}_4$.
III. $V_2{O}_5$ is amphoteric, it gives $V{O}_4^{3-}$ as well as $V{O}_2^{+}$ salts.
IV. $CrO$ is basic, while $C{r}_2{O}_3$ is amphoteric.
The correct set of statements is/are
(choose the appropriate option)

• A. I, II, III and IV
• B. Only II
• C. Both II and III
• D. Both II and IV

Answer 1

Answer: (A)

Correct answer is (a) I, II, III and IV