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  4. The co-ordination number and the oxidation state of the element 'M' in the complex [ M(en)2(C2O4)]NO2 where (en) is ethane-1,2-diamine) are, respectively

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Q. The co-ordination number and the oxidation state of the element $'M'$ in the complex $[ M(en)_{2}(C_{2}O_{4})]NO_{2}$ $\{$ where (en) is ethane-1,2-diamine) are, respectively

KCETKCET 2017Coordination Compounds

Solution:

For the given coordinate compound.

$[M (en)_2 (C_2O_4)]NO_2$

(i) $\because$ All the (3) ligands are bi dented thus its coordinate number $=6$

(ii) Oxidation number of $M$ will be

$x+0+2 \times(-2)=0-1$

$\therefore \,x$ (oxidation number of $M)=+ 3$