Coordination Compounds

Short Answer Type

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Give one use of  Ni(CO)4.

Ni(CO)4 is used in the purification of nickel.
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    What is the oxidation number of central atom in each of the following ?
    (i) [Pt(NH3)6 Cl4   (ii) Fe4 [Fe(CN)6]3
    (iii) [Ni(CO)4]       (iv) Na[Hg(CN)3]

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    What is the coordination number of central metal atom in the following?
    (i) [Pt(NH3)3]Cl               (ii) K3[Fe(C2O4]3]
    (iii) [Fe(EDTA)]               (iv) [Rh{P(C6.H5)3}3]Cl
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    Through which atoms, C or O, the carbon monoxide ligand is attached to the central metal atoms in carbonyls?

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    Give the name of a sigma (a) bonded organo metallic compound.
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    [Cu(NH3)4]2+ ion is coloured while [Cu(CN)]3– ion is colourless. Why?
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    Give names of two complexes which are used in medicines.

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    Write down the IUPAC names of the following compounds:
    (i) [Co(NH3)5ONO]Cl2,      (ii) K3[Cr(CN)6]

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    Identify the ligands in [Co(en)2 ClONO]+.
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    State the kind of isomerism possible for the following:
    (i) [Cr(en)3]3+    (ii) [Cr(NH3)4 ClBr]Br       (iii) [Cr(NH3)4 Br2l2SO4
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