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Q.
Which of the following complexes is example of strongest reducing agent?
Coordination Compounds
Solution:
All the complexes of $Co ^{2+}$ with six strong field ligands act as strong reducing agents. Also, $\left[ Co \left( NH _{3}\right)_{6}\right]^{2+}$ is readily oxidised to $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$ due to higher $CFSE$ value of $d ^{6}$ configuration.