Assertion: `KMnO_(4)` is purple in colour due to charge transfer .
Reason :There is no electron present in d-orbitals of maganese in `MnO_(4)^(-))`

Options

A. If both assertion and reason are true and the reason is the correct explanation of assertion
B. If both assertion and reason are true and the reason is not the correct explanation of assertion
C. If assertion is false but reason is true
D. If assertion is true but the reason is false

Answer

To solve the question regarding the assertion and reason related to the color of potassium permanganate (KMnO₄), we will analyze both statements step by step.

### Step 1: Understanding the Assertion
**Assertion**: KMnO₄ is purple in color due to charge transfer.

- KMnO₄ (potassium permanganate) is known for its deep purple color. This color arises from the electronic transitions that occur within the compound.
- The color is primarily due to charge transfer transitions, where electrons move from the oxygen atoms (which are in a higher energy state) to the manganese ion (Mn) in the compound.

**Conclusion**: The assertion is correct.

### Step 2: Understanding the Reason
**Reason**: There is no electron present in d-orbitals of manganese in MnO₄⁻.

- Manganese in KMnO₄ has an oxidation state of +7. The electronic configuration of manganese (Mn) is [Ar] 3d⁵ 4s².
- When manganese is in the +7 oxidation state, it loses all its d and s electrons, resulting in a configuration of 3d⁰ 4s⁰. Therefore, there are indeed no electrons in the d-orbitals of manganese in MnO₄⁻.

**Conclusion**: The reason is also correct.

### Step 3: Evaluating the Relationship Between Assertion and Reason
- While both the assertion and reason are correct, the reason does not explain why KMnO₄ is purple. The purple color is due to charge transfer, not directly because of the absence of d-electrons in manganese.

### Final Conclusion
- Both the assertion and reason are correct, but the reason is not the correct explanation for the assertion. Thus, the answer to the question is that both statements are true, but the reason does not adequately explain the assertion.

### Answer:
Both the assertion and reason are correct, but the reason is not the correct explanation for the assertion.

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