JEE Main 2019 Chemistry 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.
Answer: (D)
Solution
Acidic character decreases and basic character increases down group 13; all three statements are correct.