Select the correct statement(s) with respect to oxides and oxoanions of transition metals

Options

A. Among oxides of chromium , CrO is basic, `Cr_2O_3` is amphoteric and `CrO_3` is acidic
B. No higher oxides of iron above `Fe_2O_3` are found
C. Ti, V, Cr and Mn form oxides MO and their correct incresing order of acidic character is MnO lt CrO lt VO lt TiO
D. Vandium (V) oxide does not react with acids but reacts with alkalies only

Answer

A,B

Explanation

(A) and (B) statements are correct. These statements are factual.
(C )Along the period, the electronegativity of metals decreases and therefore the differences of electronegativites between metal and oxygen decreases. Hence, the acidic character increases, so the correct order is TiO lt VO lt CrO lt MnO.
(D)`V_2O_5` reacts with alkalies as well as acids to give `VO_4^(3-) and VO_2^(+)` respectively.