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The correct statements among I to III re...

The correct statements among I to III regarding group 13 element for oxides are:
(I) Boron trioxide is acidic
(II) Oxides of aluminium and gallium are amphoteric.
(III) Oxides of indium and thallium are basic.

A

(I) and (II) only .

B

(I) and (III) only

C

(II) and (III) only

D

(I), (II) and (III) only

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct statements about group 13 elements and their oxides, let’s analyze each statement one by one. ### Step 1: Analyze Statement I **Statement I:** Boron trioxide is acidic. - Boron trioxide (B2O3) is known to exhibit acidic properties. It reacts with water to form boric acid (H3BO3), which confirms its acidic nature. Therefore, this statement is **correct**. ### Step 2: Analyze Statement II **Statement II:** Oxides of aluminium and gallium are amphoteric. - Aluminium oxide (Al2O3) and gallium oxide (Ga2O3) both exhibit amphoteric behavior. This means they can react with both acids and bases. For example, Al2O3 reacts with acids to form salts and with bases to form aluminate ions. Thus, this statement is also **correct**. ### Step 3: Analyze Statement III **Statement III:** Oxides of indium and thallium are basic. - Indium oxide (In2O3) and thallium oxide (Tl2O3) are generally considered to be basic in nature. They can react with acids to form salts, which supports the idea that they exhibit basic properties. Therefore, this statement is **correct** as well. ### Conclusion All three statements (I, II, and III) regarding the oxides of group 13 elements are correct. Thus, the answer is that **all statements are correct**. ### Final Answer: The correct statements are I, II, and III. ---
To solve the question regarding the correct statements about group 13 elements and their oxides, let’s analyze each statement one by one. ### Step 1: Analyze Statement I **Statement I:** Boron trioxide is acidic. - Boron trioxide (B2O3) is known to exhibit acidic properties. It reacts with water to form boric acid (H3BO3), which confirms its acidic nature. Therefore, this statement is **correct**. ### Step 2: Analyze Statement II ...
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