Question

why are the first 2 elements of group 17 gases, while the bromine is a liquid, and the iodine is a sold?

Answer 1

That is the way God intended it

Answer 2

increasing mass leads to increased van der Waalls forces, which increases the melting and boiling points. The noble gases also show an increase in BP, which means eventually there might be a noble gas with a boiling point above room temp

Answer 3

lol god