Question

Both molecular solids of iodine, $I_2$, and bromine, $B{r}_2$ take on a similar appearance.
Which of the following explains why iodine has a higher melting point than bromine?

• A. Bromine has more polarizable electrons.
• B. Iodine has more polarizable electrons.
• C. Iodine has stronger intermolecular forces.
• D. Bromine has stronger dipole-dipole forces.

Answer 1

The correct option is C Iodine has stronger intermolecular forces.

Due to the bigger size of Iodine it is more polarizable than Bromine and thereby having strong intermolecular force than Bromine.