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The compound K4[Mn(CN)6] is diamagnetic.

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in Chemistry – Class 12 by (188k points)
The compound K4[Mn(CN)6] is diamagnetic.

(a) True

(b) False

I had been asked this question at a job interview.

Question is from Bonding in Coordination Compounds topic in portion Coordination Compounds of Chemistry – Class 12

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The correct answer is (b) False

To explain: The atomic number of Mn is 25 and the outer shell configuration of Mn^2+ is 3d^5. Four out of these five electrons pair up leaving 1 unpaired electron in 3d orbital and forming d^2sp^3 hybridisation. Thus, it is paramagnetic.

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