Well, I'm not sure the question can be answered. Elements like helium, apparently, even at the coldest temperature physically possible in the universe, absolute 0, don't freeze to a solid and remain liquid. So some elements won't even freeze. Really something is only cold as you make it.
Well actually elements like helium can be made to form metallic substance. I don't know for sure about helium, but I know for a fact at about 14k, if properly pressurized, hydrogen can form a metallic substance.
wht is the coldest substance of the periodic table that is already in form of ......solid due to normal temperature?
wiki.answers.com perhaphs this information from Wikipedia will help. Thanks, Janes