Why does iodine have a higher boiling point than chlorine?
Iodine atoms have more electrons surrounding them than chlorine molecules. This results in Iodine having much stronger inter-molecular forces than chlorine, which require more energy to break, resulting in a higher boiling point
PS
Related Chemistry GCSE answers
All answers ▸Name the sub-atomical particles in the nucleus and their relative charges?
What transformations occur when turning limestone to quicklime then to slaked lime?
Why is graphite softer than diamond if they are made up from the same covalently bonded carbon atoms?
What are the differences between covalent bond and an ionic bond? And can you give an example of each?