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5. Co-ordination chemistry — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
Select the correct code about complex $[Cr(NO_2) (NH_3)_5 ] [ZnCl_4]$:

$(I)\, IUPAC$ name of compound is pentaamminenitrito $-N-$ chrornium $(III)$ tetrachlorozincate $(II)$

$(II)$ It shows geometrical isomerism

$(III)$ It shows linkage isomerism

$(IV)$ It shows coordination isomerism

  • A
    $III, IV$
  • ✓
    $I, III$ and $IV$
  • C
    $II, III$ and $IV$
  • D
    $I, II, III$ and $IV$
✓

Answer

Correct option: B.
$I, III$ and $IV$
b
$(I)\,IUPAC$ name is Pentaamminenitrito $-N-$ chromium $(III)$ tetrachlorozincate $(II)$

$(II)$ It does not exhibit geometrical isomerism

$(III)$ It shows linkage isomerism due to presence of ambidentate ligand $NO^-_2$

$(IV)$ Its coordination isomers are :

$[CrCl(NH_3)_5]\,\, [ZnCl_3CNO_2)],$

$[CrCl_2(NH_3)_4] \,\,[ZnCl_2(NO_2)NH_3]$

$[ZnC(NO_2) (NH_3)_3] \,\,[CrCl_4(NH_3)_2]$

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