Question

Mention example for a gaseous halogen

Answer 1

Fluorine (F2) and chlorine (Cl2) are gases at room temperature. Bromine (Br2) is a reddish-brown liquid at room temperature and is—apart from mercury—the only element that is liquid at 20 °C (68 °F) and atmospheric pressure.

Answer 2

Answer:

Diatomic halogen molecules

Explanation:

Due to relatively weak intermolecular forces, chlorine and fluorine form part of the group known as "elemental gases". The elements become less reactive and have higher melting points as the atomic number increases.