Chemistry - Chemical Bonding - Intermolecular forces - van der Waals - Predict the Boiling Point Order

Arrange molecules from LOWEST to HIGHEST boiling point based on intermolecular force strength. 4 sets: Set 1 - Size effect (London forces only, all non-polar): He (-269°C) < Ne (-246°C) < Ar (-186°C) < Kr (-153°C) < Xe (-108°C). More electrons = stronger London forces = higher BP. Set 2 - Polar vs n