Q. 10

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Answer :

(a) When a di or polydentate ligand uses its two or more donor atoms to bind a single metal ion so as to form a ring like structure then the complex form is called chelate complex. E.g. ethylenediamine cadmium complex.



(b) Ambidentate ligand is a ligand which can legate through two different donor atoms. E.g. CN- and NC- (it can legate through C and N both), NO2- and ONO-.


OR


(a) [Co(NH3)4(H2O)2]Cl3


(Ammine and aqua both are neutral ligands)


(b) [PtBr2(en)2](NO3)2


(en i.e. ethylenediamine is a bidentate ligand)


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