At ordinary temperature and pressure, chlorine is because a gas, bromine is a liquid and iodine is a solid because

Options

A. the specific heat is in the order `l_(2)gtBr_(2)gtCl_(2)`
B. intermolecular forces among molecules of chlorine are weakest and those of iodine the strongest
C. the order of density `l_(2)gtBr_(2)gtCl_(2)`
D. the order of stability si `l_(2)gtBr_(2)gtCl_(2)`

Answer

B

Explanation

Among `CI_(2),Br_(2) "and" I_(2)` size decreased in the order :` I_(2) gt Br_(2) gt CI_(2)` and hence intermolecular forces of attraction (van der Waals forces ) decrease in the same order . In other words `CI_(2)` has the weakest and `I_(2)` has the strongest intermolecular forces of attraction.