Question

In what ways does fluorine differ from other halogens?

Answer 1

1. It has a very small atomic size and the highest electronegativity.
2. Fluorine only shows an oxidation state of −1; others show multiple states (+1, +3, +5, +7).
3. It is more reactive due to low \[\ce{F - F}\] bond dissociation energy.
4. It forms hydrogen bonding, making HF different from other hydrogen halides.
5. Fluorine’s electron gain enthalpy is less negative than chlorine’s due to high electron density.
6. Fluorine forms more ionic compounds, while others form more covalent ones.
7. It does not form polyhalide ions, unlike other halogens.
8. HF is a weak acid, whereas other hydrogen halides are strong acids.