Select correct statement for $Cr \cdot 6 {NH}_{3} \cdot {Cl}_{3} and Cr \cdot 5 {NH}_{3} \cdot {Cl}_{3}$

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In both complex compounds all Cl^- are ionizable

In both complex compounds primary valency is satisfied by only Cl^-

In both complex compounds secondary valency is satisfied by only ${NH}_{3}$

In both complex compounds Cl^-are satisfying only primary valency

answer is C.

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Detailed Solution

$Cr⋅6 {NH}_{3} \cdot {Cl}_{3} ⟶ [Cr {({NH}_{3})}_{6}] {Cl}_{3} Secondary valency' 6' . satisfied by onlyNH 3, all {Cl}^{-} satisfy only primary valency . Cr \cdot {NNH}_{3} \cdot {Cl}_{3} ⟶ [Cr {({NH}_{3})}_{5} Cl] {Cl}_{2} Secondary valency' 6' satiesfied by five {NH}_{3} and one {Cl}^{-} while all three {Cl}^{-} satify primary valency .$