Q.

The IUPAC name of K3[Co(C2O4)3] is:                 [2023]

1 Potassium trioxalatocobalt (III)  
2 Potassium tris(oxalato)cobalt (III)  
3 Potassium trioxalatocobaltate (III)  
4 Potassium tris(oxalato)cobaltate (III)  

Ans.

(3)