State and explain the trend in boiling points of chlorine, bromine, and iodine
Boiling point increases down the group, because of increasing strength of van der Waals (intermolecular) forces. More energy is required to break van der Waals (intermolecular) forces.Follow up questions could be:1) What are van der Waals forces and what determines their strength?2) Why do all halogens have similar reactivity?
AD
Related Chemistry A Level answers
All answers ▸explain why the electronegativity of fluorine is greater than that chlorine
Why is benzene more stable than the theoretical model cyclohexa-1,3,5-triene?
An alcohol, X has an Mr of 74 and percentage composition of 64.9% Carbon, 13.5% Hydrogen and 21.6% Oxygen. It does not turn potassium dichromate (VI) green. Determine the structural formula of X, and state its name.
Describe how propenal, propanal and propanone can be distinguished from one another by simple chemical tests.