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Coordination Compounds Test - 5

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Coordination Compounds Test - 5
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  • Question 1
    1 / -0
    Directions: The following question has four choices, out of which only one is correct.

    Wilkinson's catalyst is a chemical used for the hydrogenation of alkenes. Other applications of the Wilkinson's catalyst include the catalytic hydroboration of alkenes with catecholborane and pinacolborane and the selective 1,4-reduction of ,-unsaturated carbonyl compounds along with triethylsilane.

    The catalyst discussed here can be referred to as a
  • Question 2
    1 / -0

    The type of hybridisation possible with a coordination number of 6 can be

    Solution

    sp3d2 hybridisation means there are 6 orbitals involved in hybridisation (1 ns, 3 np and 2 nd) and 6 hybrid orbitals are formed. So with a coordination number 6, this hybridisation is possible.

  • Question 3
    1 / -0
    The number of chloride ions produced by complex tetraminedichloroplatinum(IV) chloride in an aqueous solution is
  • Question 4
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    What is the coordination number of chromium in [Cr(NH​​​​​3)2(H2O​​​​2)2]Cl​​​​​3?

    Solution

    Coordination number of the central metal atom/ion in a complex is the number of ligand donor atoms directly bonded to it. There are 4 ligands attachted to Cr so its coordination number= 4.

  • Question 5
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    Which of the following orders of ligands in spectrochemical series is correct?
  • Question 6
    1 / -0

    The coordination number of the central ion may be obtained from

    Solution

    Coordination number of the central metal atom/ion is equal to number of ligand donor atoms directly bonded to the central metal atom/ion. So it can be determined by the number of sigma bonds formed by the ligands with the central metal atom/ion.

  • Question 7
    1 / -0
    Primary and secondary valencies of [Cr(NH3)5Cl]SO4 respectively are
  • Question 8
    1 / -0
    According to Werner's theory of complexes, primary valencies are
  • Question 9
    1 / -0
    The colour of [Ti(H2O)6]3+ ion is due to
  • Question 10
    1 / -0
    Which of the following complexes is diamagnetic in nature?
  • Question 11
    1 / -0
    Which of the following compounds is not coloured?
  • Question 12
    1 / -0
    Which of the following statements is correct?
  • Question 13
    1 / -0
    Which of the following is a chelating ligand?
  • Question 14
    1 / -0
    In [Fe(F6)]-4 ion, which of the following statements is incorrect?
  • Question 15
    1 / -0
    Select the correct statement about the given square planar complex shown below:

  • Question 16
    1 / -0
    The number of unpaired electrons associated with Cr in the complex [Cr(CN)6]4– is
  • Question 17
    1 / -0
    The correct order for the wavelengths of absorption of the complexes of nickel in the visible region is
  • Question 18
    1 / -0
    The hypothetical complex chlorodiaquatriamminecobalt (III) chloride can be represented as
  • Question 19
    1 / -0

    The theory which uses the concept of hybridised orbitals to explain the nature of bonding in coordintion compounds is:

    Solution

    According to Valence Bond Theory, the metal atom or ion under the influence of ligands can use its (n-1)d, ns, np or ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar and so on. These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding. So Valence bond theory uses the concept of hybridised orbitals to explain the bonding in complexes.

  • Question 20
    1 / -0
    What is the EAN of nickel in Ni(CO)4?
  • Question 21
    1 / -0

    The oxidation state of Ag in tollen’s reagent is

    Solution

    Tollen's reagent contains diamminesilver(I) complex. So oxidation state of Ag in tollen’s reagent is +1.

  • Question 22
    1 / -0
    Directions: Match the statements/expressions in Column – I with the statements/expressions in Column – II and indicate your answer by selecting the appropriate option. Any statement in Column – I can correctly match with one or more statement(s) in Column – II.

    Column – I Column – II
    (A) [Co(NH3)4 (H2O)2]Cl2
    (B) [Pt(NH3)2Cl2]
    (C) [Co(H2O)5Cl]Cl
    (D) [Ni(H2O)6]Cl2    		 (p) Geometrical isomers
    (q) Paramagnetic
    (r) Diamagnetic
    (s) Metal ion with + 2 oxidation state
  • Question 23
    1 / -0
    The number of unpaired electrons associated with Ni in the complex [Ni(NH3)6]2+ is
  • Question 24
    1 / -0
    Oxidation state of the central metal ion in [Pt(NH3)2(NO3)2]SO4 is
  • Question 25
    1 / -0
    Which of the following compounds is not an example of the main group organo-metallics?
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