1.

Which of the following statements are correct about stability of chelates ?

Answer»

As the no. of rings in complex increases, stability of chelate also increases
A chelate having FIVE memberd ring on more stable if it contains DOUBLE bonds
A chelate having six memberd ring in more stable if it does not contain double bonds
Chelating ligands are atleast bidentate ligands

Solution :The more rings that are formed by the polydentate ligand in chelation, the more stable the complex is Eg.. EDTA FORMS five rings as is a hexadentate ligand. Its complexes with even `Ca^(2+)` ion are stable. Chelate compounds are more stable, if they posses alternate single and double bonds which would HELP DELOCALISATION of electron cloud.


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