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  4. The conductivity of a solution of complex with formula CoCl 3( NH 3)4 corresponds to 1: 1 electrolyte, then the primary valency of central metal ion is

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Q. The conductivity of a solution of complex with formula $CoCl _3\left( NH _3\right)_4$ corresponds to $1: 1$ electrolyte, then the primary valency of central metal ion is ______

JEE MainJEE Main 2022Coordination Compounds

Solution:

$\left[ Co \left( NH _3\right)_4 Cl _2\right] Cl$
Primary valency $=$ oxidation no. $=+3$