`K_(2)Cr_(2)O_(7)` is a good oxidising agent in acidic medium. Explain.

Explanation

To explain why \( K_2Cr_2O_7 \) (potassium dichromate) is a good oxidizing agent in acidic medium, we can follow these steps:

### Step 1: Define an Oxidizing Agent
An oxidizing agent is a substance that facilitates the oxidation of another species while being reduced itself. This means that the oxidizing agent gains electrons and its oxidation state decreases.

**Hint:** Remember that oxidizing agents are characterized by their ability to accept electrons.

### Step 2: Identify the Relevant Species
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