Which of the following describes the trends going down Group 7?

As you go down Group 7 from fluorine to iodine: 1. **Relative Molecular Mass:** The atoms of each element have more protons, neutrons, and electrons than the one above it. This means the atomic mass increases. Since halogens exist as diatomic molecules (e.g., F₂, Cl₂), their relative molecular mass also increases. 2. **Boiling Point:** The forces between the halogen molecules are weak intermolecular forces (van der Waals forces). As the molecules get larger and have more electrons, the strength of these intermolecular forces increases. More energy is required to overcome these stronger forces to separate the molecules during boiling, so the boiling point increases. (F₂ is a gas, Cl₂ is a gas, Br₂ is a liquid, I₂ is a solid at room temperature).