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Question
Write coordination number of Fe3+ in [Fe(C2O4)3]3− complex ion.
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Solution
In [Fe(C2O4)3]3−, three bidentate \[\ce{C2O^{2-}_4}\] ligands, that is total of six donor atoms are attached to ferric ion (Fe3+). Therefore, the coordination number of Fe3+ ion in the complex ion is six.
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