Question
Chemistry Question on p -Block Elements
At ordinary temperature and pressure, chlorine is a gas, bromine' is a liquid and iodine is a solid because
A
among them chlorine is the lightest and iodine is the heaviest
B
chlorine has lowest specific heat
C
chlorine molecule is least stable
D
intermolecular forces are the weakest in chlorine and strongest in iodine
Answer
intermolecular forces are the weakest in chlorine and strongest in iodine
Explanation
Solution
Intermolecular forces (van der Waals' forces) increases with increase in molecular weight and size. Intermolecular forces are weakest in chlorine and strongest in iodine.