Q.

Total number of electrons donated by ligands to cobalt ion in [Co(en)(H2O)Cl3] is

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a

8

b

12

c

10

d

5

answer is B.

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Detailed Solution

Co has six coordination number, therefore it is connected with six ligands. In the given complex-[Co(en)(H2O)Cl3], there is 1 bidentate and 4 mono dentate ligands.

Each ligand contributes 2 electrons, so total number of electrons donate by the ligand to the central metal ion.

Total number of donate electrons=1(2) + 4(2) = 10

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