Coordination Compounds(General Knowledge > General Science ) Questions and Answers

Question 1. Which one is a cationic complex?
  1.    K3[Fe(CN)6]
  2.    Na2[Ni(EDTA)]
  3.    [Co(en)2Cl2]Cl
  4.    K3[Fe(CN)5NO]
Explanation:-
Answer: Option C. -> [Co(en)2Cl2]Cl
Question 2. The IUPAC name of K2 [Ni (CN)4] is
  1.    Potassium tetracyanatonickelate (II)
  2.    Potassium tetracyanonickelate (III)
  3.    Potassium tetracyanonickel (III)
  4.    Potassium tetracyanatonickel (II)
Explanation:-
Answer: Option A. -> Potassium tetracyanatonickelate (II)
Question 3. The IUPAC name of the complex [Co (NH3)4 Cl2] Cl is
  1.    dichloro tetraammine cobalt (III) chloride
  2.    tetraammine dichloro cobalt (III) chloride
  3.    tetraammine dichloro cobalt (II) chloride
  4.    tetraammine dichloro cobalt (IV) chloride
Explanation:-
Answer: Option B. -> tetraammine dichloro cobalt (III) chloride
Question 4. The value of 'spin only' magnetic moment for one of the following configurations is 2
  1.    d4 (in strong field ligand in octahedral complexes)
  2.    d4 (in weak field ligand in octahedral complexes)
  3.    d3 (in weak as well as strong field ligand in octahedral complexes)
  4.    d5 (in strong field ligand in octahedral complexes)
Explanation:-
Answer: Option A. -> d4 (in strong field ligand in octahedral complexes)
Question 5. The compound having lowest oxdation state of iron is
  1.    K4[Fe(CN)6]
  2.    K2FeO4
  3.    [Fe(CO)5]
  4.    K3[Fe(CN)6]
Explanation:-
Answer: Option C. -> [Fe(CO)5]
Question 6. The type of isomerism shown by the complex [CoCl2(en)2] is
  1.    Geometrical isomerism
  2.    Coordination isomerism
  3.    Linkage isomerism
  4.    Ionization isomerism
Explanation:-
Answer: Option A. -> Geometrical isomerism
Question 7. Which of the following complexes can exhibit optical isomerism? (en = H2N–CH2–CH2–NH2 and is bidentate)
  1.    cis–Co(NH3)4Cl2
  2.    trans–Co(en)2Br2
  3.    cis–Co(en)2Cl2
  4.    Co(NH3)3Cl3
Explanation:-
Answer: Option C. -> cis–Co(en)2Cl2
Question 8. Which of the following species is not expected to be a ligand
  1.    NO
  2.    NH4+
  3.    NH2CH2CH2NH2
  4.    CO
Explanation:-
Answer: Option B. -> NH4+
Question 9. Which one is an anionic complex?
  1.    K[Ag(CN)2]
  2.    [Ag(NH3)2]Cl
  3.    [Ni(CO)4]
  4.    [Co(NH3)6]Cl3
Explanation:-
Answer: Option A. -> K[Ag(CN)2]
Question 10. Which one is a neutral ligand?
  1.    H2O
  2.    NH3
  3.    CO
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
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