Boiling Points in Halogens

Question 1

describe trend in boiling point as you go down group 7

Answer 1

increases

Question 2

which intermolecular force holds halogens together and prevents them becoming gases

Answer 2

van der Waals / London forces

Question 3

explain why boiling poin increases down group 7

Answer 3

• mass, number of electrons and size / SA increases as you go down
• therefore stronger van der Waal forces
• therefore more energy required to overcome these forces