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CBSE Class 12 Chemistry 2019 Outside Delhi Set 3 Solved Paper

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Question : 6 of 13
Marks: +1, -0
Define the following terms with a suitable example of each:
(a) Polydentate ligand
(b) Homoleptic complex
OR
Using IUPAC norms, write the formulae for the following complexes:
(a) Potassium tri(oxalate)chromate(III)
(b) Hexaaquamanganese(II) sulphate
Solution:  
(a) A ligand having several donor atoms. Example: EDTA
(b) A complex in which a metal is bound to only one kind of donor groups / ligands.Example[Co(NH3)6]3+[\mathrm{Co}(\mathrm{NH}_3)_6]^{3+}
OR
(a) K3[Cr(C2O4)3]\mathrm{K}_3[\mathrm{Cr}(\mathrm{C}_2\mathrm{O}_4)_3]
(b) [Mn(H2O)6]SO4[\mathrm{Mn}(\mathrm{H}_2\mathrm{O})_6]\mathrm{SO}_4
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