In which of the following coordination compounds, the central met

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 Multiple Choice QuestionsMultiple Choice Questions

91.

The ratio of anion radius to cation radius of a crystal is 10 : 9.3. Then, the coordination number of the cation in the crystal is

  • 2

  • 6

  • 4

  • 8


92.

Which one of the following gives Prussian blue colour?

  • Fe2[Fe(CN)6]

  • Na4[Fe(CN)6]

  • Fe3[Fe(CN)6]3

  • Fe4[Fe(CN)6]3


93.

A coordinate complex contains Co3+, Cl- and NH3. When dissolved in water, one mole of this complex gave a total of 3 moles of ions. The complex is

  • [Co(NH3)6]Cl3

  • [Co(NH3)5Cl]Cl2

  • [Co(NH3)4Cl2]Cl

  • [Co(NH3)3Cl3]


94.

The oxidation state and covalency of Al in [AlCl(H2O)5]2+ are respectively

  • +6,6

  • +3,6

  • +2,6

  • +3,3


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95.

When AgNO3 solution is added in excess to 1M solution of CoCl3. X NH3 one mole of AgCl is formed. What is the value of X?

  • 1

  • 4

  • 3

  • 2


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96.

In which of the following coordination compounds, the central metal ion is in zero oxidation state?

  • [Fe(H2O)6]Cl3

  • K4[Fe(CN)6]

  • Fe(CO)5

  • [Fe(H2O)6]Cl2


C.

Fe(CO)5

Let oxidation state of central atom = x

For, [Fe(H2O)6]Cl3

x + 6 × 0 + 3 (-1) = 0

x + 0 - 3 = 0

x = +3

For K4[Fe(CN)6]

4 × 1 + x + 6 (-1) = 0

x - 2 = 0

x = +2

For Fe(CO)5,

x + 5 × 0 = 0

x = 0

For [Fe(H2O)6Cl2

x + 6 × 0 + 2(-1)

x - 2 = 0

x = +2


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97.

Match the following
Column I  Column II
(A) sp3 (i) [Co(NH3)6]3+
(B) dsp2 (ii) [Ni(CO)4]
(C) sp3d2 (iii) [Pt(NH3)2Cl2]
(D) d2sp3 (iv) [CoF6]3-
  (v) [Fe(CO)5]

  • A    B    C    D

    (v) (ii)  (i)  (iii)

  • A    B    C    D

    (ii)  (iii) (iv) (v)

  • A    B    C    D

    (ii) (iii) (i)  (v)

  • A    B     C     D

    (iii) (ii)  (iv)  (i)


98.

Select the correct IUPAC name [Co(NH3)5(CO)3]Cl.

  • Penta ammonia carbonate cobalt (III) chloride

  • Pentammine carbonate cobalt chloride

  • Pentammine carbonato cobalt (III) chloride

  • Cobalt (III) pentammine carbonate chloride


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99.

Identify, from the following, the diamagnetic, tetrahedral complex

  • [Ni(Cl)4]2-

  • [Co(C2O4)3]3-

  • [Ni(CN)4]2-

  • [Ni(CO)4]


100.

Which type of isomers are [Co(NH3)5Br]SO4 and [Co(NH3)5SO4]Br?

  • Hydrate isomers

  • Ionisation isomers

  • Ligand isomers

  • Coordination isomers


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