JEE MAIN - Chemistry (2022 - 27th July Morning Shift - No. 20)
The conductivity of a solution of complex with formula $$\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{4}$$ corresponds to 1 : 1 electrolyte, then the primary valency of central metal ion is __________.
Answer
3
Explanation
In 1: 1 type of electrolyte the ions have $+1$ and $-1$ charge on them
$\therefore$ Possible compound is $\rightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+} \mathrm{Cl}^{-}$
Oxidation state of central atom represents the total number of primary valency
$\therefore$ Primary valency will be 3 .
$\therefore$ Possible compound is $\rightarrow\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+} \mathrm{Cl}^{-}$
Oxidation state of central atom represents the total number of primary valency
$\therefore$ Primary valency will be 3 .
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