The correct statement 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

Options

A. I, II and III
B. I and II only
C. II and III only
D. I and III only

Explanation

To solve the question regarding the correct statements about group 13 element oxides, let's analyze each statement step by step.

### Step 1: Analyze Statement I
**Statement I:** Boron trioxide is acidic.

- Boron (B) is the first element in group 13 and forms an oxide known as boron trioxide (B2O3).
- Boron trioxide is known to react with water to form boric acid (H3BO3), which indicates its acidic nature.

**Conclusion for Statement I:** This statement is correct.

### Step 2: Analyze Statement II
**Statement II:** Oxides of aluminium and gallium are amphoteric.

- Aluminium (Al) and gallium (Ga) are also part of group 13.
- The oxides formed by these elements are Al2O3 (aluminium oxide) and Ga2O3 (gallium oxide).
- Both Al2O3 and Ga2O3 can react with both acids and bases, demonstrating amphoteric behavior.

**Conclusion for Statement II:** This statement is correct.

### Step 3: Analyze Statement III
**Statement III:** Oxides of indium and thallium are basic.

- Indium (In) and thallium (Tl) are lower down in group 13.
- As we move down the group, the metallic character increases, leading to the formation of more basic oxides.
- The oxides formed are In2O3 (indium oxide) and Tl2O3 (thallium oxide), which are indeed basic in nature.

**Conclusion for Statement III:** This statement is correct.

### Final Conclusion
Since all three statements are correct, the answer to the question is that all statements I, II, and III are correct.

### Answer: All statements are correct.

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