From the stability constant (hypothetical  values)given below, predict which is the strongest ligand?

  • Cu2++4NH3⇌[Cu(NH3)4]2+;(k=4.5x1011)

  • Cu2++4CN⇌[Cu(CN)4]2-;(K=2.0x1027)

  • Cu2++2en⇌[Cu(en)2]2+;(K=3.0x1015)

  • Cu2++4H2O⇌[Cu(H2O)4]2+;(K=9.5x108)

Which does not obey EAN rule?

  • [Cu(NH3)4]2+

  • [Zn(OH)4]2-

  • [HgI4]2-

  • Fe(CO)5

Which of the following species can act as reducing agent ?

  •  [Co(CO)4]-     

  •  Mn(CO)6       

  •  Mn(CO)5       

  •  Cr(CO)6

The coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively

  • 3 and +3

  • 3 and 0

  • 6 and +3

  • 4 and +2

The octahedral complex will not show geometrical isomerism is :
(A and B are monodentate ligands)

  • [MA4B2]

  • [MA5B]

  • [MA2B4]

  • [MA3B3]

According to IUPAC nomenclature sodium nitroprusside is named as

  • sodium pentacyanonitrosyl ferrate(II)

  • sodium pentacyanonitrosyl ferrate(III)

  • sodium nitroferricyanide

  • sodium nitroferrocyanide

The compound that is not  π-bonded organometallic compound is :

  • K[PtCl3(η2-C2H4)]

  • Fe(η5-C5H5)2

  • Cr(η6-C6H6)2

  • (CH3)4Sn

IUPAC name of [Pt(NH3)3 (Br)(NO2)Cl]Cl is :

  • Triamminebromidochloridonitroplatinum(IV)Chloride

  • Triamminebromonitrocholoroplatinum(IV)Chloride

  • Triamminechlorobromonitroplatinum(IV)Chloride

  • Triamminenitrochlorobromoplatinum(IV)Chloride

Which of the following cation does not form an amine complex with excess of ammonia?

  • Ag+

  • Cu2+

  • Cd2+

  • Na+

The denticity of EDTA is : 

  • Monodentate.

  • Hexadentate.

  • Bidentate.

  • Tridentate.

The coordination number of cobalt in[Co(en)2Br2]Cl2 is:

  • 2

  • 4

  • 6

  • 8

The correct IUPAC name of KAl(SO4)2.12H2O is:

  • Aluminium potassium sulphate-12-water

  • Potassium aluminium(III)sulphate-12-water

  • Potassium aluminate(III)sulphatehydrate

  • Aluminium(III) potassium sulphate hydrate-12

The correct IUPAC name of Mn3(CO)12 is :

  • Dodecacarbonylmanganate(0)

  • Dodecacarbonylmanganate(II)

  • Dodecacarbonyltrimanganese(0)

  • Manganicdodecacarbonyl0)

The complex showing a spin-only magnetic moment of 2.82 B.M. is:

  • Ni(CO)4

  • [NiCl4]2-

  • Ni(PPh3)4

  • [Ni(CN)4]2-

Atomic number of Cr and Fe are respectively 24 and 26 which of the following is paramagnetic with the spin of electron?

  • [Cr(CO)6]

  • [Fe(CO)5]

  • [Fe(CN)6]4-

  • [Cr(NH3)6]3+

The compound which does not show paramagnetism is:

  • [Cu(NH3)4]Cl2

  • FeO

  • NO

  • N2O4

A solution containing 2.675g of CoCl3.6NH3 (molar mass=267.5g mol-1) is passed through a cation exchanger. The chloride ions obtained in the solution were treated with an excess of AgNO3 to give 4.78g of AgCl. The formula of the complex is-
(At.mass of Ag=108u)

  • [CoCl(NH3)5]Cl2

  •  [Co(NH3)6]Cl3

  • [CoCl2(NH3)4]Cl

  • [CoCl3(NH3)3]

Trunbull's blue is :

  • ferricyanide

  • ferrous ferricyanide

  • ferrous cyanide

  • ferri ferrocyanide

The correct IUPAC name of AlCl3(EtOH)4 is :

  • Aluminium (II)Chloride-4-ethanol

  • Aluminium (III)Chloride-4-ethanol

  • Aluminium (IV)Chloride-4-hydroxy ethane

  • Aluminium Chloride-4-ethanol

Which complex has square planar shape dsp2 hydridizatiop?

  • [Ni(CN)4]2-

  • [Cu(NH3)42+

  • [PtCl4]2-

  • All of these

Which has regular tetrahedral geometry?

  • [BF4]-

  • XeF4

  • [Ni(CN)4]-2

  • SF4

The primary valency of Fe in K3[Fe(CN)6] is:

  • 3

  • 2

  • 1

  • zero

The IUPAC name for the complex [Co(NO2)(NH3)5]Cl2 is:

  • pentaamminenitro-N-cobalt(II)chloride

  • nitro-N-pentaamminecobalt(III)chloride

  • nitro-N-pentaamminecobalt(II)chloride

  • pentaamminenitro-N-cobalt(III)chloride

The total number of possible isomers for the complex compound[CuII(NH3)4][PtIICl4] are

  • 5

  • 6

  • 3

  • 4

Glycinato ligand is :

  •  

  • bidentate ligand

  • two donor sites N and O-

  • all of the above

Out of TiF62-,CoF63-, Cu2Cl2 and NiCl42-(At. no. Z of Ti=22, Co=27, Cu=29, Ni=28), the colourless species are

  • TiF62- and CoF63-

  • Cu2Cl2 and NiCl42-

  • TiF62- and Cu2Cl2 

  • CoF63- and NiCl42-

The correct name of the compound [Cu(NH3)4](NO3)2, according to IUPAC system is:

  • cuprammonium nitrate

  • tetraamminecopper(II)dinitrate

  • tetraamminecopper(II)nitrate

  • tetraamminecopper(I)dinitrate

Ferrocene is :

  • Fe(η5-C5H5)2

  • Fe(η2-C5H5)2

  • Cr(η5-C5H5)5

  • Os(η5-C5H5)2

The ionization isomer, among the following, of [Cr(H2O)4Cl(NO2)]Cl is :

  • [Cr(H2O)4(O2N)]Cl2

  • [Cr(H2O)4Cl2](NO2)

  • [Cr(H2O)4Cl(ONO)]Cl

  • [Cr(H2O)4Cl2(NO2)].H2O

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

  • sp3,dsp2.dsp2

  • sp3,dsp2,sp3

  • sp3,sp3,dsp2

  • dsp2,sp3,sp3

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