Question:
The color of $CoCl _{3} \cdot 5 NH _{3} \cdot H _{2} O$ is
The color of $CoCl _{3} \cdot 5 NH _{3} \cdot H _{2} O$ is
Updated On: Jan 30, 2025
- red
- orange
- orange - yellow
- pink
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The Correct Option is D
Solution and Explanation
$CoCl _{3} .5 NH _{3} \cdot H _{2} O$ is pink in colour.
It has $Co ^{3+}$ ion with $[ Ar ] 3 d ^{6}$ electronic configuration. It has $4$ unpaired electrons.
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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.