Why does boiling point decrease down group 1 in the periodic table? [3 marks]
Atomic radius increases
Although nuclear charge increases, this is outweighed by the increased shielding from inner shell electrons
Therefore, nuclear attraction to the delocalised electrons decreases (metallic bonds are weaker and so require less energy to overcome)
Related Chemistry A Level answers
All answers ▸State and explain the trend in boiling points of chlorine, bromine, and iodine
Why does phenol readily undergo electrophilic substitution but benzene does not without the aid of a catalyst?
What are the strongest intermolecular forces in CH4, NH3 and H2O? From this deduce which has the highest boiling point, giving reasoning.
What are the different types of bonding in chemicals?