Question

Which of the following is/are correct regarding the physical state of halogens ?

• A. Iodine is a solid at room temperature
• B. Iodine is a gas at room temperature
• C. Bromine is a gas at room temperature
• D. Bromine is a liquid at room temperature

Answer 1

Answer: (A), (D)

Bromine is a liquid at room temperature

The strength of the van der Waals between molecules forces increases as the size of the halogen increases from fluorine to iodine. As a result, $F_2$ and $C{l}_2$ are gases at room temperature, $B{r}_2$ is a liquid whereas $I_2$ is a solid.