First slide

13th group or boron group

Question

The correct statements among I to III regarding group 13 element oxides?
I) Boron trioxide is acidic.
II) Oxides of Aluminum and Gallium are amphoteric.
III) Oxides of indium and thallium are basic.

Moderate

A

I, II and III
B

I and III only
C

I and II only
D

II and III only

Solution

$B_{2} O_{3} -$ acidic
$A l_{2} O_{3}, G a_{2} O_{3} -$ amphoteric
$I n_{2} O_{3} T l_{2} O_{3} -$ basic

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