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Denticity

Chem Ch. 18

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Complex Ions Complex ion - ionic species consisting of a metal ion bonded to one or more Lewis bases Coordinate bond - bond formed when one anion/molecule donates a pair of electrons to another ion/molecule to form a covalent bond Ligand - a Lewis base bonded to the central metal ion of a complex ion Common Ligands (Lewis Bases): NH3, H2O, OH-, Cl-, CN- Inner coordination sphere - ligands that are bound directly to a metal via coordinate covalent bonds Counter ions - ions that balance the electrical charges of complex ions in coordination compounds Ex: [Ag(NH 3 ) 2 ] + + Cl - ?> [Ag(NH 3 ) 2 ]Cl Coordination compound - any compound that contains a complex ion Coordination number - identifies the number of electron pairs surrounding a metal ion in a
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