`A_(2)O_(3)+2BtoB_(2)O_(3)+2A` is an example of

Options

A. displacement reaction
B. decomposition reaction
C. double displacement reaction
D. combination reaction.

Explanation

To solve the question, we need to analyze the given chemical reaction:

**A2O3 + 2B → B2O3 + 2A**

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactants in this equation are A2O3 and 2B.
- The products are B2O3 and 2A.

2. **Understand the Reaction Type**:
- We need to determine what type of reaction this is.
- In this case, we observe that one element (B) is replacing another element (A) in the compound A2O3.

3. **Define Displacement Reaction**:
- A displacement reaction occurs when an element in a compound is replaced by another element.
- In this reaction, B displaces A from A2O3, resulting in the formation of B2O3 and releasing A.

4. **Classify the Reaction**:
- Since only one element is being displaced, this is classified as a **single displacement reaction**.
- If there were two compounds and both were exchanging elements, it would be termed a double displacement reaction, but that is not the case here.

5. **Conclusion**:
- Therefore, the reaction A2O3 + 2B → B2O3 + 2A is an example of a **single displacement reaction**.

### Final Answer:
The reaction A2O3 + 2B → B2O3 + 2A is an example of a **single displacement reaction**.

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