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Explain why transition metals form compl...

Explain why transition metals form complex compounds.

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The transition metal ions possess a great tendency to form complexes because of their small size, high ionic charge and availability of partially filled d-orbitals for bond formation. These partially filled d-orbitals can easily accommodate ligands electrons and consequently transition metals ions form complexes. Examples `[Fe(CN_(6))]^(3-),Ni(CO)_(4)` etc.
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