Which of the following has the highest melting and boiling points ?

Options

A. `F_(2)`
B. `I_(2)`
C. `Cl_(2)`
D. `Br`

Answer

2

Explanation

The melting and boiling and boiling points of the elements increase with increasing with increasing atomic numbers. The van der Waals forces are strongest in `I_(2)` imparting it the highest melting points and boiling point. At room temperature ,`F_(2)` and `Cl_(2)` are gases `Br_(2)` is liquids and `I_(2)` is a solid. in temperature climates ,only two elements ,`Br_(2)` and `Hg` are room tempaerature. In very hot climates `Cs, Ga` and `TI` are also liquids. AT atmospheric pressure `I_(2)` solid sublimes without melting.