The coordination number of a central metal at | vedclass

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(D) The coordination number of a central metal atom in a coordination complex is defined as the total number of $\sigma-$ bonds formed by the ligands

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the number of monodentate ligands around a metal ion bonded by $\sigma-$ bonds

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(D) The coordination number of a central metal atom in a coordination complex is defined as the total number of $\sigma-$ bonds formed by the ligands with the central metal atom. Since each ligand donates at least one lone pair to form a coordinate covalent bond (which is a $\sigma-$ bond),the coordination number is the sum of the number of $\sigma-$ bonds formed by all ligands attached to the metal ion. Therefore,it is the number of monodentate ligands (or the equivalent number of donor atoms) bonded to the metal ion by $\sigma-$ bonds.

The coordination number of a central metal atom in a complex is determined by

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