Electrolysis of pure ionic molten compounds metal is formed at :

Options

A. anode
B. cathode
C. inert electrode
D. base of the apparatus

Explanation

To solve the question regarding the electrolysis of pure ionic molten compounds and where the metal is formed, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrolysis**: Electrolysis is a chemical process that uses electrical energy to drive a non-spontaneous chemical reaction. It involves the breaking down of ionic compounds into their respective ions.

2. **Identifying the Ionic Compound**: Consider a common ionic compound such as sodium chloride (NaCl). When NaCl is in a molten state, it dissociates into its constituent ions: Na⁺ (sodium ions) and Cl⁻ (chloride ions).

3. **Setting Up the Electrolytic Cell**: In an electrolytic cell, there are two electrodes:
- **Anode**: The positive electrode where oxidation occurs.
- **Cathode**: The negative electrode where reduction occurs.

4. **Connecting the Electrodes**: The positive terminal of the battery is connected to the anode, and the negative terminal is connected to the cathode.

5. **Movement of Ions**:
- The positively charged sodium ions (Na⁺) will migrate towards the cathode (negative electrode).
- The negatively charged chloride ions (Cl⁻) will migrate towards the anode (positive electrode).

6. **Reactions at the Electrodes**:
- **At the Cathode**: Reduction occurs. The Na⁺ ions gain electrons (from the cathode) and are reduced to form pure sodium metal (Na).
\[ \text{Na}^+ + e^- \rightarrow \text{Na (s)} \]
- **At the Anode**: Oxidation occurs. The Cl⁻ ions lose electrons and are oxidized to form chlorine gas (Cl₂).
\[ 2\text{Cl}^- \rightarrow \text{Cl}_2 + 2e^- \]

7. **Conclusion**: The metal (sodium in this case) is formed at the cathode during the electrolysis of molten NaCl. Therefore, the answer to the question is that the metal is formed at the **cathode**.

### Final Answer:
The metal is formed at the **cathode** during the electrolysis of pure ionic molten compounds.

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