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The question consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses: Assertion: Co-ordination number of cobalt in the complex `[Co(en)_3]^(3+)` is six. Reason: Ethylenediamine acts as a bidentate ligand.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1C. Statement-1 is True, Statement-2 is False.D. Statement-1 is False, Statement-2 is True.

Answer» Correct Answer - A
In`H_2oversetuarrddotN-H_2C-CH_2-oversetuarrddotNH_2` two ammine nitrogen atoms act as donor atoms. So, it acts as a bidentate ligand.Hence, there are six `sigma`-bonds between metal and ligands, there by given coordination number six.


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