Chemistry - Coordination compounds and organometallics

Question - 1

On the basis of Warner theory the complex CoCl3.6NH3 or Co(NH3)6Cl3, hexammine cobalt (III) chloride has 

  • A 2 primary valencies and 4 secondary valencies
  • B 3 primary valencies and 6 secondary valencies
  • C 2 oxidation stste and 4 coordination number 
  • D NONE OF THE ABOVE

Question - 2

Complex compounds Cu(NH3)4SO4 and Pt(NH3)4Cl4 have coordination numbers 

  • A 2 and 4 respectively
  • B 2 and 6 respectively
  • C 4 and 6 respectively
  • D 3 and 6 respectively

Question - 3

Warener isolated diverse complex products from the reaction of cobalt chloride and ammonia, e.g., CoCl.36NH3:  CoCl3.5NHH2o; CoCl3.5NHand CoCl3.4NH3. Out of the four the green colour is for 

  • A CoCl3.6NH3 
  • B CoCl3.5NH3 H2O
  • C CoCl3.5NH3 
  • D CoCl3.4NH3 

Question - 4

Which of the following is not a monodentate ligand?

  • A aquo
  • B ammine 
  • C pyridienes
  • D oxalato

Question - 5

Which one of the following is a hexadentate ligand?

  • A triethylene tetramine
  • B ethylene triammine
  • C diethylene diammine triaceto
  • D ethylene diammine tetraaceto

Question - 6

which one of the following compounds will exhibit linkage isomerism?

  • A [Co(en)2Cl2]Cl
  • B [Pt(PH3)2Cl2]
  • C [Co(NH3)5No2]Cl2
  • D [Co(NH3)4]Cl

Question - 7

Which one of the following ompounds will exhibit optical isomerism?

  • A [Co(NH3)4Cl2]+ 
  • B [Co(NH3)Cl3]
  • C Cis [Co(en)3]3+
  • D trans[Co(en)3]3+

Question - 8

Which one of the following compounds will not exhibit geometrical isomerism?

  • A Pt(NH3)2Cl2
  • B [Co(NH3)4Cl2]+
  • C [Co(en3)]3+
  • D [Co(NH3)5NO2]Cl2

Question - 9

The oxidation state of Pt [(en)H2O)4(NO2)Cl]2+ is 

  • A +2
  • B +4
  • C +6
  • D -4

Question - 10

In the above question the coordination number of platinum is  

  • A +2 
  • B +4
  • C +6
  • D -2
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