Question

what is the coordination number and the oxidation state of the element 'E' in the complex [E(en)2(C2O4)]NO2

Answer 1

The coordination number and the oxidation state of the element ‘E’ in the complex [E(en)2(C2O4)]NO2 (where(en) is ethylene diamine) are, respectively,
6 and 2
4 and 2
4 and 3
6 and 3
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