How many unpaired electrons are there in the octahedral complex ion, Mn(CN)₆⁴^-?

Name: How many unpaired electrons are there in the octahedral complex ion, Mn(CN) 6 4 - ?
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In the octahedral complex ion Mn(CN)₆⁴⁻, Mn is in the +2 oxidation state (Mn²⁺), which has a d⁵ electron configuration. CN⁻ is a strong field ligand, causing pairing of electrons in the lower energy t₂g orbitals. This results in one unpaired electron in the eg orbital.

How Many Unpaired Electrons Are There in the Octahedral Complex