Which statement correctly identifies a diatomic halogen molecule?

Which statement correctly identifies a diatomic halogen molecule?

• A. Cl2
• B. Br2
• C. I2
• D. All of the above

Answer: (D)

Halogens in their elemental form pair up to achieve a full outer shell, so they exist as diatomic molecules (two atoms held together by a covalent bond). Chlorine, bromine, and iodine each form such two-atom molecules: Cl2, Br2, and I2. Because all three listed halogens are diatomic in their elemental state, the statement that describes a diatomic halogen molecule is correct for each of them. For broader context, fluorine and astatine also form diatomic molecules (F2 and At2), illustrating the same pattern across the halogen group.

Halogens in their elemental form pair up to achieve a full outer shell, so they exist as diatomic molecules (two atoms held together by a covalent bond). Chlorine, bromine, and iodine each form such two-atom molecules: Cl2, Br2, and I2. Because all three listed halogens are diatomic in their elemental state, the statement that describes a diatomic halogen molecule is correct for each of them. For broader context, fluorine and astatine also form diatomic molecules (F2 and At2), illustrating the same pattern across the halogen group.