What is the oxidation state of $Co$ in $ [Co(H_{2}O)_{5}Cl]^{2+}? $
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- 3
- 1
- 4
The Correct Option is B
Solution and Explanation
The correct answer is B:3
The oxidation state of H2O is 0, and that of Cl is -1. The overall charge on the compound is +2.
\(x+(5\times 0)+(-1)=+2\)
\(x=+3\)
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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.