Question

Which among the following halogen exists in liquid state at room temperature?

• A. Fluorine
• B. Chlorine
• C. Bromine
• D. Iodine

Answer 1

The Correct Option is C

Fluorine (F) and Chlorine (Cl) are gases at room temperature due to their low boiling points.
Iodine (I) is a solid at room temperature with a higher boiling point than bromine, so it doesn't exist as a liquid under normal conditions.
Bromine (Br), however, exists as a liquid at room temperature (around 25°C), as its boiling point is 58.8°C and its melting point is -7.2°C.

Thus, Bromine is the halogen that exists in the liquid state at room temperature.

Answer 2

Bromine is the only halogen that exists as a liquid at room temperature. Due to its moderate molecular weight and the van der Waals forces between its molecules, bromine remains in a liquid state at standard conditions, unlike other halogens that are gases or solids at room temperature.