Question

Which of the following is solid?

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

Answer 1

The correct option is C

Iodine

Explanation for correct option:

C. Iodine

Solid:

• In solid, the particles are tightly packed due to the strong intermolecular attractions.
• A solid has a definite shape, volume, and mass.
• Examples are books as well as wood.

Out of all the halogens, only Iodine$\left(\mathrm{I}\right)$ is a solid at room temperature $\left({25}^{\mathrm{o}}\mathrm{C}\right)$ due to its huge molecular weight and strong Van Der Waals forces.

Explanation for incorrect options:

A. Fluorine $\left(\mathrm{F}\right)$ exists as a gas at room temperature.

B. Bromine$\left(\mathrm{Br}\right)$ is liquid at room temeprtaure.

D. Chlorine $\left(\mathrm{Cl}\right)$ is a gas at room temperature.

Hence, the correct option is C i.e. Iodine is solid.