Calculate the `EAN` of the central metal in the following complex
(a) `[AuCl_(2)]^(Θ)` ,(b) `[Al(C_(2)O_(4))_(3)]^(3-)`,(c ) `[Cd(I)_(4)]^(Θ)` .

Explanation

To calculate the Effective Atomic Number (EAN) of the central metal in the given coordination compounds, we will use the formula:

\[ \text{EAN} = Z - O + E \]

Where:
- \( Z \) = Atomic number of the central metal
- \( O \) = Oxidation state of the central metal
- \( E \) = Total number of electrons donated by the ligands
...