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The radius of a calcium ion is 94 pm and of the oxide ion is 146 pm. The possible crystal structure of calcium oxide will be
The radius of a calcium ion is 94 pm and of the oxide ion is 146 pm. The possible crystal structure of calcium oxide will be
Updated On: Jun 2, 2024
- tetrahedral
- trigonal
- octahedral
- pyramidal
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The Correct Option is C
Solution and Explanation
As per formula, radius ratio
\(= \frac{radius\, of \,cation}{radius \,of \,anion}m\)
\(=\frac{94}{146}=0.643\)
Since the value is between 0.414 - 0.732 hence the coordination no. will be 6 and geometry will be octahedral.
So, the correct option is (C): octahedral.
\(= \frac{radius\, of \,cation}{radius \,of \,anion}m\)
\(=\frac{94}{146}=0.643\)
Since the value is between 0.414 - 0.732 hence the coordination no. will be 6 and geometry will be octahedral.
So, the correct option is (C): octahedral.
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.
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