For molecules and polyatomic ions the coordination number of an atom is determined by simply counting the other atoms to which it is bonded (by either single or multiple bonds). For example, [Cr(NH3)2Cl2Br2]− has Cr3+ as its central cation, which has a coordination number of 6 and is described as hexacoordinate.
What is coordination number with example?
The coordination number is the number of ligands attached to the central metal atom or ion. For example, tetra carbonyl nickel Ni(CO)4 has a coordination number of 4 as 4 CO ligands are attached to Ni atom.
Here are the steps for identifying the coordination number of a coordination compound.
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