Question:
A compound of manganese that has intense colour, diamagnetic and temperature dependent weak paramagnetic. What is the compound?}
A compound of manganese that has intense colour, diamagnetic and temperature dependent weak paramagnetic. What is the compound?}
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\(KMnO_4\) is a classic example of a strongly coloured but diamagnetic compound due to \(d^0\) configuration and charge transfer transitions.
Updated On: Apr 24, 2026
- \(K_2MnO_4\)
- \(MnO_2\)
- \(KMnO_4\)
- \(MnO\)
- \(Mn_2O_3\)
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The Correct Option is C
Solution and Explanation
In \(KMnO_4\), manganese is in +7 oxidation state.
Electronic configuration of \(Mn^{7+}\):
\[
3d^0
\]
Since there are no unpaired electrons:
\[
\text{diamagnetic}
\]
Also, permanganate ion is intensely coloured due to charge transfer transitions.
Hence, the correct answer is: \[ \boxed{(C)\ KMnO_4} \]
Hence, the correct answer is: \[ \boxed{(C)\ KMnO_4} \]
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