Which of the following statement(s) is/are correct for halogens

Options

A. halogen which is liquid at room temperature is bromine
B. the most electronegativity element is fluorine
C. the most reactive halogen is fluorine
D. the strongest oxidising agent is iodine

Answer

To determine which of the statements regarding halogens are correct, let's analyze each statement step by step.

### Step 1: Analyze the first statement
**Statement:** "The halogen which is liquid at room temperature is bromine."

**Solution:** This statement is correct. Bromine (Br) is the only halogen that is a liquid at room temperature (around 20°C). The other halogens (fluorine, chlorine, and iodine) are gases or solids at room temperature.

### Step 2: Analyze the second statement
**Statement:** "The most electronegative element is fluorine."

**Solution:** This statement is also correct. Fluorine (F) has the highest electronegativity value of 4.0 on the Pauling scale, making it the most electronegative element in the periodic table.

### Step 3: Analyze the third statement
**Statement:** "The most reactive halogen is fluorine."

**Solution:** This statement is correct as well. Fluorine is known to be the most reactive halogen and is often referred to as a "super halogen" due to its high reactivity, which is attributed to its small atomic size and high electronegativity.

### Step 4: Analyze the fourth statement
**Statement:** "The strongest oxidizing agent is iodine."

**Solution:** This statement is incorrect. Among the halogens, chlorine (Cl) is the strongest oxidizing agent, not iodine (I). Chlorine can oxidize both bromine and iodine, indicating that it has a stronger tendency to gain electrons compared to iodine.

### Conclusion
- **Correct Statements:** 1, 2, and 3.
- **Incorrect Statement:** 4.

### Final Answer:
The correct statements regarding halogens are:
1. The halogen which is liquid at room temperature is bromine.
2. The most electronegative element is fluorine.
3. The most reactive halogen is fluorine.
4. The strongest oxidizing agent is iodine (this statement is incorrect).