Which among the following is the most reactive?

Options

A. `Br_(2)`
B. `I_(2)`
C. `Icl`
D. `Cl_(2)`

Answer

To determine which of the given compounds is the most reactive, we need to analyze the reactivity of each compound based on their molecular structure and bond characteristics. The options provided are:

1. Bromine (Br2)
2. Iodine (I2)
3. Iodine Chloride (ICl)
4. Chlorine (Cl2)

### Step 1: Analyze the compounds
- **Bromine (Br2)**: This is a diatomic molecule where both atoms are bromine. The bond is non-polar because both atoms have the same electronegativity.

- **Iodine (I2)**: This is also a diatomic molecule with both atoms being iodine. Similar to bromine, the bond is non-polar due to equal electronegativity.

- **Iodine Chloride (ICl)**: This is a compound made of iodine and chlorine. Chlorine is more electronegative than iodine, resulting in a polar bond. The difference in electronegativity creates a dipole moment, making this compound more reactive.

- **Chlorine (Cl2)**: This is a diatomic molecule with both atoms being chlorine. The bond is non-polar due to equal electronegativity.

### Step 2: Compare the reactivity
- Non-polar bonds (Br2, I2, Cl2) are generally less reactive because they do not have a dipole moment that can facilitate reactions with other molecules.
- Polar bonds (ICl) are more reactive because the dipole moment allows for interactions with other molecules, making it easier for chemical reactions to occur.

### Step 3: Conclusion
Since ICl has a polar bond due to the difference in electronegativity between iodine and chlorine, it is more reactive than the other non-polar diatomic molecules (Br2, I2, Cl2).

Thus, the most reactive compound among the given options is **Iodine Chloride (ICl)**.

### Final Answer
The most reactive compound is **ICl** (Option C).

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