Write the oxidation state and coordination number of metal in the complex, `[CrCl_(3)(PY)_(3)].`

Explanation

To determine the oxidation state and coordination number of the metal in the complex \([CrCl_3(PY)_3]\), we can follow these steps:

### Step 1: Identify the components of the complex
The complex consists of chromium (Cr), chloride ions (Cl), and pyridine (PY). Pyridine is a neutral ligand.

### Step 2: Assign oxidation states
Let the oxidation state of chromium be \(x\). The chloride ions each have an oxidation state of \(-1\). Since there are three chloride ions, their total contribution to the charge is \(-3\). Pyridine (PY) is neutral, so it contributes \(0\) to the charge.

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