Chemistry - Complete d-block Question with Solution | TestHub

Oxides of transition metals in low oxidation states +2 and +3 (MO,${\mathrm{M}}_3{\mathrm{O}}_4$and${\mathrm{M}}_2{\mathrm{O}}_3$) are generally basic except$\mathrm{C}{\mathrm{r}}_2{\mathrm{O}}_3$which is amphoteric in character.