Q32 / 120 · VITEEE 2014 · Chemistry
Which of the following oxides is strongly basic?
- A$\mathrm{Tl}_{2} \mathrm{O}$
- Correct answerB$\mathrm{B}_{2} \mathrm{O}_{3}$
- C$\mathrm{Al}_{2} \mathrm{O}_{3}$
- D$\mathrm{Ga}_{2} \mathrm{O}_{3}$
Solution
On moving down the group, the nature of the oxides of group 13 elements changes from weakly acidic to amphoteric and amphoteric to basic. $\mathrm{Tl}_{2} \mathrm{O}$ in aqueous solution gives $\mathrm{TlOH}$ which soluble and a strong base.
Hence, the correct answer is option: 'B'.