KCET 2017 Chemistry Solved Paper

Oxidation number of M metal ion in the given complex, x+(2×0)+1×(−2)=1
x=+3
Since, metal is linked with 6 donor sites.
Therefore, coordination no. is 6
The coordination number is six and the oxidation state of theelement M in the complex [M(en)2(C2O2)]NO2 is +3