Question:
The correct statements among I to III regarding group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminium and gallium are amphoteric.
(III)Oxides of indium and thallium are basic.
Correct Option:
Solution:
(I) $\mathrm{B}_{2} \mathrm{O}_{3}$-Acidic oxide
(II) $\mathrm{Al}_{2} \mathrm{O}_{3} \& \mathrm{Ga}_{2} \mathrm{O}_{3}-$ Amphoteric oxide
(III) $\mathrm{In}_{2} \mathrm{O}_{3} \& \mathrm{Tl}_{2} \mathrm{O}$ - Basic oxide
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