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  4. 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 thalliumare basic.

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Q. 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 thalliumare basic.

JEE MainJEE Main 2019The p-Block Elements

Solution:

All statements are correct
$B_2O_3 \rightarrow$ acidic
$Al_2O_3 \; \& \; Ga_2O_3$ are amphoteric oxides of In & Tl are basic