Which of the following oxides is most alkaline in nature?

Question

Which of the following oxides is most alkaline in nature? (A) B2O3 (B) Al2O3 (C) In2O3 (D) Tl2O

Tardigrade Admin · Accepted Answer

Among the group-13 elements, B,Al,Ga,In forms oxide of the type E2O3 on reaction with oxygen. While Tl has +1 state in its oxide and its oxide has the formula Tl2O . The nature of oxides of group-13 elements varies down the group. Boron trioxide is acidic and reacts with basic (metallic) oxides forming metal borates. Aluminium and gallium oxides are amphoteric and those of indium and thallium are basic in their properties. The basic nature increases as we move down the group. Thus out the given oxides, the most alkaline one is Tl2O .

Q. Which of the following oxides is most alkaline in nature?

$B_{2} O_{3}$

$A l_{2} O_{3}$

$I n_{2} O_{3}$

$T l_{2} O$

Q. Which of the following oxides is most alkaline in nature?

B2​O3​

Al2​O3​

In2​O3​

Tl2​O

$B_{2} O_{3}$

$A l_{2} O_{3}$

$I n_{2} O_{3}$

$T l_{2} O$