Draw the structure of optical isomers of each of the following complex ion :
`[Cr(C_2O_4)_3]^(3-)`

Explanation

To draw the optical isomers of the complex ion \([Cr(C_2O_4)_3]^{3-}\), we will follow these steps:

### Step 1: Identify the central metal and ligands
The central metal in the complex is chromium (Cr), and the ligand present is oxalate (\(C_2O_4^{2-}\)). The oxalate ion is a bidentate ligand, meaning it can attach to the chromium at two coordination sites.

### Step 2: Determine the coordination number
The coordination number of chromium in this complex is 6, as there are three oxalate ligands, each coordinating through two sites.

...