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Solution


Q.

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is          [2015]
1 6  
2 7  
3 8  
4 9  

Ans.

(4)

[M(en)2(C2O4)]Cl : 

Oxidation number of metal = +3

Coordination number of metal = 6

∴ Sum of oxidation number and coordination number = 3 + 6 = 9