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 statements about KMnO4, we will analyze both statements step by step.

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

- **Explanation:** KMnO4 (Potassium permanganate) is indeed purple in color. This color arises from the charge transfer transitions rather than d-d transitions, which are typical for many transition metal complexes. In KMnO4, the manganese is in a high oxidation state (+7), which means that it has lost all its d-electrons. Therefore, the color is due to charge transfer from the oxygen ligands to the manganese ion.

### Step 2: Analyze the Reason
**Reason:** There is no electron present in d-orbitals of manganese in MnO4^(-).

- **Explanation:** In the MnO4^- ion, manganese is in the +7 oxidation state. The electronic configuration of manganese is [Ar] 4s² 3d⁵. When manganese is in the +7 state, it loses all its electrons, resulting in an electronic configuration of [Ar]. Hence, there are indeed no electrons in the d-orbitals of manganese in the MnO4^- ion.

### Step 3: Determine the Truth of Both Statements
- Both the assertion and the reason are true statements:
- KMnO4 is purple due to charge transfer.
- There are no d-electrons in MnO4^- due to manganese being in the +7 oxidation state.

### Step 4: Evaluate the Relationship Between Assertion and Reason
- While both statements are true, the reason does not correctly explain the assertion. The assertion states that the color is due to charge transfer, while the reason focuses on the absence of d-electrons, which does not directly explain why KMnO4 is purple.

### Conclusion
- The correct answer is that both the assertion and reason are true, but the reason is not the correct explanation for the assertion.

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

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