Which one of the following is tris (ethane-1,2-diammine) cobalt (III) sulphate?

Step-by-step solution

The given name is of cation type complex. Thus, its formula is [ Co ( en )₃ ]₂ ( SO ₄ )₃ and is named as tris (ethane 1, 2, diammine) cobalt (III) sulphate. The following rules are used while naming the complex : (i) The cation is named first (if present outside the coordination sphere). (ii) Then, the ligands are named in an alphabetical order along with their quantity before the name of central atom/ion. (This procedure is reversed for writing the formula). (iii) The name of central metal is written along with it