posted by i love chem .
Which of the following properties increase with increasing atomic number for fluorine and chlorine?
I. melting point of the elements (yes)
II. boiling point of the hydrogen halides
A) I only
B) II only
C) Both I and II
D) neither I nor II
I think it's A - is that right?
Yes, HF has a higher boilng point than HCl. It has something to do with a larger dipole moment and intramolecular binding.