Coordination CompoundHard
Question
In the complex [CoCl2(en)2]Br, the co-ordination number and oxidation state of cobalt are :
Options
A.6 and +3
B.3 and +3
C.4 and +2
D.6 and +1
Solution
Let x be the oxidation state of cobalt in [CoCl2(en)2]+ . So, x + 2(-1) + 0 = +1 or x = + 3.
As there are six σ-bonds between cobalt and ligands, it coordination number is 6 (here ′en′ is a bidentate ligand).
As there are six σ-bonds between cobalt and ligands, it coordination number is 6 (here ′en′ is a bidentate ligand).
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