Question

Explain the difference in the melting points between the molecules of HCl and HI

Answer 1

Answer:

HI has higher boiling point than HCl and HBr. This is to do with the intermolecular forces in the two compounds. ... But since HI molecules contain more electrons than HBr, there are increased van der Waals forces in HI. For the same reason HBr has a higher boiling point than HCl.