Helium Frost

I asked my phone what chemical has the lowest freezing point and it told me that it is Helium. Helium doesn't freeze until it it is crushed under very high pressure. It could be minus 250 °c and that wouldn't be enough. 

Now I am wondering if liquid helium would float in its own solution like water ice does. It makes you wonder what all the gases would do in their liquid state and frozen states? What properties does liquid carbon dioxide have and what about dry ice, frozen carbon dioxide. Then there is oxygen, oxygen ice and liquid nitrogen and nitrogen ice. A whole world for me to discover.