Which of the following element is extracted commercially by the electrolysis of an aqueous solution of its compound

Options

A. Chlorine
B. Bromine
C. aluminium
D. Calcium

Explanation

To solve the question of which element is extracted commercially by the electrolysis of an aqueous solution of its compound, we can follow these steps:

### Step 1: Identify the elements typically extracted by electrolysis.
In general, alkali metals and alkaline earth metals are extracted using fused electrolysis methods, which means they are not typically extracted from aqueous solutions.

**Hint:** Consider the common methods used for extracting different types of metals and non-metals.

### Step 2: Focus on the elements that can be extracted from aqueous solutions.
When it comes to the electrolysis of aqueous solutions, certain non-metals, such as chlorine, can be extracted.

**Hint:** Think about the common compounds that are electrolyzed in aqueous solutions and the products formed.

### Step 3: Consider the electrolysis of sodium chloride (NaCl) in aqueous solution.
When NaCl is electrolyzed in an aqueous solution, the following products are formed:
- Chlorine gas (Cl2) at the anode
- Hydrogen gas (H2) at the cathode
- Sodium hydroxide (NaOH) remains in solution.

**Hint:** Recall the products of electrolysis of common ionic compounds in aqueous solutions.

### Step 4: Determine which element is commercially extracted.
From the electrolysis of NaCl, the chlorine gas (Cl2) is the element that is extracted commercially.

**Hint:** Identify which of the products is a useful commercial product.

### Conclusion:
The element that is extracted commercially by the electrolysis of an aqueous solution of its compound is **chlorine (Cl2)**.

**Final Answer:** Chlorine (Cl2) is the correct answer.