Assertion (A) : `C_(60)` fullerence is an allotrope if carbon.
Reason (R) :In `C_(60)` fullerene , five -menmebrd rings are isolated forem each other .

Options

A. If both (A) and (R) are correct and (R) is correct explanation of (A)
B. If both (A) and (R) are correct and (R) is not correct explanation of (A)
C. If (A) is correct , but (R) is incorrect
D. If (A) is incorrect but (R) is correct

Explanation

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
**Assertion (A)**: C₆₀ fullerene is an allotrope of carbon.

- **Explanation**: Allotropes are different forms of the same element in the same physical state. Carbon has several allotropes, including diamond, graphite, and fullerenes. C₆₀, also known as buckyball, is indeed one of the allotropes of carbon.

**Conclusion**: The assertion is **true**.

### Step 2: Analyze the Reason
**Reason (R)**: In C₆₀ fullerene, five-membered rings are isolated from each other.

- **Explanation**: C₆₀ fullerene consists of 12 five-membered rings and 20 six-membered rings. The five-membered rings are indeed connected to the six-membered rings, but they are not directly connected to each other, which means they can be considered isolated in terms of connectivity. However, the statement does not provide a direct explanation for why C₆₀ is an allotrope of carbon.

**Conclusion**: The reason is **true**, but it does not correctly explain the assertion.

### Final Conclusion
Both the assertion and reason are true, but the reason is not the correct explanation for the assertion. Therefore, the answer is:

**Correct Option**: Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.

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