In the coordination complex, Potassium hexac | vedclass

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(C) $1$. The coordination complex is $K_4[Fe(CN)_6]$.$2$. The central metal ion is $Fe^{2+}$.$3$. In coordination complexes, the central metal ion acc

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Lewis acid

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(C) $1$. The coordination complex is $K_4[Fe(CN)_6]$.$2$. The central metal ion is $Fe^{2+}$.$3$. In coordination complexes, the central metal ion accepts lone pairs of electrons from the ligands ($CN^-$ ions).$4$. According to the Lewis theory, an electron pair acceptor is defined as a Lewis acid.$5$. Therefore, $Fe^{2+}$ acts as a Lewis acid.

In the coordination complex, $Potassium \ hexacyanoferrate(II)$, the central metal ion acts as:

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