Coordination Chemistry Two Marks Question

12th Standard EM

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. Arrange the following in order of increasing molar conductivity
    (i) Mg[Cr(NH3)(Cl)5]
    (ii) Cr(NH3)5Cl]3[CoF6]2
    (iii) [Cr(NH3)3Cl3]

  2. Based on VB theory explain why [Cr(NH3)6]3+ is paramagnetic, while [Ni(CN)4]2- is diamagnetic.

  3. Draw all possible geometrical isomers of the complex [Co(en)2]+ and identify the optically active isomer.

  4. [Ti(H2O)6]3+ is coloured, while [Sc(H2O)6]3+ is colourless- explain

  5. Name the following complex using IUPAC norms. [Co(en)2 (ONO)CI]CI

  6. What is the coordination number of central metal ion in [Fe(C2O4)3]3-?

  7. Write the IUPAC name of [Ni(H2O)6] (CI)2

  8. Define 'Ligand' Give an example of nautral legand.

  9. Write the IUPAC name of [Cu(NH3)4]SO4

  10. Give the chemical formula of potassium trioxalato ferrate(III}

  11. Calculate the magnetic moment of [Fe(H2O)6]2+, if atomic number of Fe is 26.

  12. How many geometrical isomers are possible in the following co-ordination entities?
    (i) [Cr(C2O4)3]3-
    (ii) [CO(NH3)3Cl3]

  13. Arrange the following complex ions in the increasing order of crystal filed splitting energy (\({ \triangle }_{ 0 }\)) [CrCI6]3-, [Cr(CN)6]3-, [Cr(NH3)6]3+

  14. Name the following :
    (i) Ring that is attached to Fe2+ in haemoglobin.
    (ii) Vitamin B12 is a co-ordination compound of this element.
    (iii) Complex that is used in the hydrogenation of alkenes

  15. What is Co-ordination entity?

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