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Polydentate Ligands

Q.1. When a c...

Question

Q.1. When a co-ordination compound ${C r C l}_{3}$ . ${6 N H}_{3}$ is mixed with ${A g N O}_{3}$ , 3 moles of AgCl are precipitated per mole of the compound. Write
(i) Structural formula of the complex.
(ii) IUPAC name of the complex.

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Solution

${C r C l}_{3} . {6 N H}_{3} ⟶ 3 m o l A g C l$
Primary linkage $=$ 3
Secondary linkage $=$ 6
Coordination number $=$ 6
Complex:-
$[{C r ({N H}_{3})}_{6}] {C l}_{3}$
Oxidation state of Cr
$= x + 0 \times 6 - 1 \times 3 = 0$
$x = + 3$
Name $=$ hexaaminechromium(III)chloride

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