why does iodine have a higher boiling point than chlorine?
If we look at group 7 of the periodic table, we can see that iodine is below chlorine. The trend in going down a group in the periodic table is that the number of electron shells increases, therefore, number of electrons increases. This means a molecule of iodine (I2) has more electrons than a molecule of chlorine (Cl2) so the van der waal's inter molecular forces are stronger and require more energy to overcome meaning the boiling point of iodine is higher than that of chlorine.
LH
Related Chemistry GCSE answers
All answers ▸How do you know which chemicals are formed at the electrodes in the electrolysis of aqueous solutions?
How to balance chemical equations (harder level question): C6H12O6 + O2 --> CO2 + H2O
a) Give a balanced equation for the complete combustion of butane, b) Explain how this would change if there was insufficient oxygen present, and explain the problems this causes
Zinc reacts with dilute Hydrochloric acid, what is the chemical equation for this reaction? what would you see? How could you speed up this reaction?