Primary and Secondary valency of Co in the co | vedclass

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(B) In the coordination compound $[Co(en)_3]Cl_3$,the central metal atom is $Co$. Primary valency corresponds to the oxidation state of the central me

Vedclass · Accepted Answer

$3, 6$

Vedclass · Answer

(B) In the coordination compound $[Co(en)_3]Cl_3$,the central metal atom is $Co$. Primary valency corresponds to the oxidation state of the central metal atom. Let the oxidation state of $Co$ be $x$. Since $en$ (ethylenediamine) is a neutral ligand and $Cl$ has a charge of $-1$,we have $x + 3(0) + 3(-1) = 0$,which gives $x = +3$. Thus,the primary valency is $3$. Secondary valency corresponds to the coordination number of the central metal atom. $en$ is a bidentate ligand,so $3$ molecules of $en$ provide $3 	imes 2 = 6$ donor atoms. Thus,the coordination number is $6$. Therefore,the primary and secondary valencies are $3$ and $6$ respectively.

Primary and Secondary valency of $Co$ in the complex compound $[Co(en)_3]Cl_3$ is respectively . . . . . . .

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