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JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry

Complex \(\mathrm{X}\) of composition \(\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6} \mathrm{Cl}_{\mathrm{n}}\) has a spin only magnetic moment of \(3.83\; BM\). It reacts with \(AgNO_{3}\) and shows geometrical isomerism. The \(IUPAC\) nomenclature of \(X\) is

  1. A Tetraaquadichlorido chromium \((III)\) chloride dihydrate
  2. B Hexaaqua chromium \((III)\) chloride
  3. C Dichloridotetraaqua chromium \((IV)\) chloride dihydrate
  4. D Tetraaquadichlorido chromium \((IV)\) chloride dihydrate
Verified Solution

Answer & Solution

Correct Answer

(A) Tetraaquadichlorido chromium \((III)\) chloride dihydrate

Step-by-step Solution

Detailed explanation

\(\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6} \mathrm{Cl}_{\mathrm{n}}\) if magnetic mement is 3.83 BM then it contain three unpaired electrons. It means chromium in \(+3\) oxidation state so molecular formula is…
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