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Question
The coordination number of a central metal atom in a complex is determined by ______.
Options
the number of ligands around a metal ion bonded by sigma bonds
the number of ligands around a metal ion bonded by pi-bonds
the number of ligands around a metal ion bonded by sigma and pi-bonds both
the number of only anionic ligands bonded to the metal ion
MCQ
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Solution
The coordination number of a central metal atom in a complex is determined by the number of ligands around a metal ion bonded by sigma bonds.
Explanation:
Coordination number refers to the total number of sigma bonds formed between the central metal atom/ion and the ligands. Pi-bonding, if present, does not affect the coordination number.
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