Which halogen has the least bond energy?

Explanation

To determine which halogen has the least bond energy, we will analyze the bond energies of the diatomic molecules formed by the halogens in group 17 (the halogens): fluorine (F2), chlorine (Cl2), bromine (Br2), and iodine (I2).

### Step-by-Step Solution:

1. **Identify the Halogens**: The halogens we are considering are fluorine (F), chlorine (Cl), bromine (Br), and iodine (I).

2. **Understand Bond Energy**: Bond energy is the amount of energy required to break a bond between two atoms. A higher bond energy indicates a stronger bond, while a lower bond energy indicates a weaker bond.

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