Which of the following properties increase with increasing atomic number for fluorine and chlorine?

Question

I. melting point of the elements (yes)
II. boiling point of the hydrogen halides

i'm not sure about II because HF has the highest boiling point but fluorine and chloride fit in the general trend that increasing atomic number results in increasing boiling points. help? Is it both, just one, or neither?

Answer 1

See your post above.