Question
Question: The coordination number and the oxidation state of the element 'E' in the complex [E(en)2(C2O4)] NO2...
The coordination number and the oxidation state of the element 'E' in the complex [E(en)2(C2O4)] NO2 (when 'en' is ethylene diamine) are, respectively,
A
4 and 2
B
4 and 3
C
6 and 3
D
6 and 2
Answer
6 and 3
Explanation
Solution
Let oxidation state of E is x so x + (–2) + 0 = +1 or x = +3
Coordination number is number of s-bonds between metal ion and ligands. 'en' and 'ox' are bidentate ligands Thus ; coordination number of E = 4 + 2 = 6.