Number of ions produced from the complex [Co(NH3)6]Cl2 in an aqueous solution are-

  • 6      

  • 4    

  • 3        

  • 2

Compound with the highest magnetic moment value is -

  • [Cr(H2O)6]3+       

  • [Fe(H2O)6]2+            

  • [Zn(H2O)6]2+

  • [Ti(H2O)6]2+

The oxidation number of Cobalt in K[Co(CO)4] is

  • +1       

  • +3         

  • –1         

  • –3

 The most stable complex among the following is -

  • [Fe(H2O)6]3+     

  • [Fe(NH3)6]3+       

  • [Fe(C2O4)3]3–       

  • [FeCl6]3–

What is the overall complex dissociation equilibrium constant for the [Cu(NH3)]2+ ion , given that β4 for this complex is 2.1 × 1013 ?

1. 4.7 × 10-142. 3.6 × 10-123. 4.9 × 10144. 5.6 × 10-13

  • 1
  • 2
  • 3
  • 4

Indicate the complex ion which shows geometrical isomerism-

4. Co(CN)63-

  •  Cr(H2O)4Cl2+

  •  Pt(NH3)3Cl

  •  Co(NH3)63+

  • 4

In quantitative analysis of second group in lab. H2S gas is passed in acidic medium for ppt. When Cu+2 and Cd+2 react with KCN, then in which of the following condition, precipitate will not be formed due to relative stability :

    K2[Cd(CN)4] – Less stable

    K2[Cd(CN)4] – More stable

    K2[Cd(CN)4] – Less stable

    K3[Cd(CN)4] – More stable

  • K2[Cu(CN)4] – More stable

  • K2[Cu(CN)4] – Less stable

  • K3[Cu(CN)4] – More stable

  • K3[Cu(CN)4] – Less stable

A complex compound which is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with AgNO3. What will be its formulae : 

  •  [Co(NH3)5NO3]Cl2

  •  [Co(NH3)5Cl]NO3Cl

  •  [Co(NH3)4Cl2]NO3

  •  [Co(NH3)4ClNO3]Cl

Shape of Fe(CO)5 is :

  • Octahedral

  • Square planar

  • Trigonal bipyramidal

  • Square pyramidal

Mg is present in :

  • Chlorophyll

  • Haemoglobin

  • Vitamin-B12

  • Vitamin-B

Number of isomers of [Pt (NH3)4] [CuCl4] complex are :

  •   2
  •   3
  •   4
  •   5

The coodination compound that will give four isomers is :

  • [Fe(en)3]Cl3

  • [Co(en)2Cl2]Cl

  • [Fe(PPh3)3NH3ClBr]Cl

  • [Co(PPh3)3Cl]Cl3

The IUPAC name of [Co(NH3)3ClBrNO2] will be :

  • Triamminebromochloronitrocobaltate (III)
  • Triamminebromochloronitrocobalt (III)
  • Triamminebromonitrochlorocobalt (III)
  • Triamminenitrobromochlorocobalt (III)

[Cu(NH3)4]+2 reacts with HNO3 in excess of water gives : 

  •  Cu(OH)2

  •  Cu(NO3)2

  •  Cu(H2O)-2

  • None of the above 

In [Cr(NH3)6] Br3 , number of unpaired electrons in Cr is  :

  •   4
  •   3
  •   1
  •   2

Anticancer agent among the following is  :-

  •  

  •  

  •  

  •  

CN is a strong field ligand. This is due to the fact that :-

  • It is a pseudohalide.

  • It can accept electrons from metal species.

  • It forms high spin complexes with metal species.

  • It carries a negative charge.

Considering H2O as a weak field ligand, the number of unpaired electrons in \([Mn(H_{2}O)_{6}]^{2+}\) will be –
(At. no. of Mn = 25)

  • Five

  • Two

  • Four

  • Three

Among [Ni(CO)4],[Ni(CN)4]2,[NiCl4]2- species, the hybridization states at the Ni atom are  respectively :-
(At. No. of Ni = 28)

  •   sp3,dsp2,sp3
  •  sp3,sp3,dsp2
  •  dsp2,sp3,sp3
  •  sp3,dsp2,dsp2

Coordination compound that would exhibit optical isomerism is :

  • Diamminedichloroplatinum (II)

  • Trans-dicyanobis (ethylenediamine) chromium (III) chloride

  • Tris – (ethylenediamine) cobalt (III) chloride

  • Pentaamminenitrocobalt (III) iodide

Atomic number of Cr and Fe are respectively 24 and 26 . Among the following the one that is paramagnetic with the spin of electron is : -

  •  CrCO6

  •  FeCO5

  •  FeCN6-4

  •  CrNH36+3

The hypothetical complex chlorodiaquatriamminecobalt (III) chloride can be represented as-

  •  CoClNH33H2O2Cl2

  •  CoNH33H2OCl3

  •  CoNH23H2O2Cl

  •  CoNH33H2O3Cl3

CuSO4 when reacts with KCN forms CuCN, which is insoluble in water.
It is soluble in excess of KCN, due to formation of the following complex : -

  • CuCN2

  • Cu[KCu(CN)4]

  • K2[Cu(CN)4]

  • K3[Cu(CN)4]

The coordination compound that give maximum number of isomers : -

  •  [Co(NH3)4Cl2]

  •  [Ni(en)(NH3)4]+2

  •  [Ni(C2O4)(en)2]

  •  [Cr(SCN)2(NH3)4]+

According to IUPAC nomenclature, sodium nitroprusside is named as -

  • Sodium nitroferricyanide

  • Sodium nitroferrocyanide

  • Sodium pentacyanidonitrosyl ferrate (II)

  • Sodium pentacyanonitrosyl ferrate (III)

The number of unpaired electrons in the complex ion [CoF6]3– is-

(A + No = Co = 27)

  • 2

  • 3

  • 4

  • Zero

Vitamin B12 contains :

  • Fe(II)

  • Co(III)

  • Zn(II)

  • Ca(II)

The coordination number of Ni in [Ni(C2O4)3]4- is :

  •    3

  •    6

  •   4 

  •   2 

The organometallic compound that is σ and π bonded is : -

  •   [Fe(η5-C5H5)2]

  •   K[PtCl3(η2-C2H4)]

  •  [Co(CO)5NH3]+2

  •  Fe(CH3)3

Incorrect option among the following is  : -

  •    Ni(CO)4 ,Tetrahedral, paramagnetic
  •  Ni(CN)4-2   ,Square planar, diamagnetic
  •   Ni(CO)4 Tetrahedral, diamagnetic
  •   [Ni(Cl)4]-2 Tetrahedral, paramagnetic

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