Identify the satements which are not correct ?
(i) `ZnO,PbO,Sb_(2)O_(3)` are neutral oxides.
(ii) CO and NO are amphoteric oxides.
(iii) `CrO_(3),Mn_(2)O_(7),V_(2)O_(5)` are basic oxides.

Options

A. `i,ii`
B. `i,iii`
C. `ii,iii`
D. `i,ii,iii`

Answer

D

Explanation

(i) `ZnO,PbO,Sb_(2)O_(3)` are amphoteric oxides that have the properties of both acids and bases. They have acidic properties against bases and basic properties against acids.
(ii) CO and NO are neutral oxides since they are oxygen poor compounds of non-metals.
(iii) `CrO_(3),Mn_(2)O_(7),V_(2)O_(5)` are acidic in nature.