H2SO4 Posted March 19, 2005 Share Posted March 19, 2005 I have a periodic table that shows the crystal structure of all the elements. I knew metals had crystal structures, but i didnt know that oxygen was crystaline and same with helium. Are they just saying that the altropes of these elements are crystaline (like sulfur and phosporus). Link to comment Share on other sites More sharing options...
Ophiolite Posted March 20, 2005 Share Posted March 20, 2005 No. If the temperature of any material is lowered sufficiently it will form a crystalline solid. Helium has the lowest melting point of all elements - less than a degree above absolute zero. Link to comment Share on other sites More sharing options...
The Thing Posted March 20, 2005 Share Posted March 20, 2005 Helium, most stable of all elements. Have they even solidified Helium yet? Link to comment Share on other sites More sharing options...
budullewraagh Posted March 20, 2005 Share Posted March 20, 2005 yes. it has magnetic properties, supposedly Link to comment Share on other sites More sharing options...
coquina Posted March 20, 2005 Share Posted March 20, 2005 yes. it has magnetic properties, supposedly Isn't it about time to swap that hat for bunny ears? Link to comment Share on other sites More sharing options...
budullewraagh Posted March 20, 2005 Share Posted March 20, 2005 dr lang likes being santa. he'll take it off sometime soon Link to comment Share on other sites More sharing options...
H2SO4 Posted March 21, 2005 Author Share Posted March 21, 2005 I guess at decreased pressures they could solidify helium, i don't see why not. Link to comment Share on other sites More sharing options...
budullewraagh Posted March 21, 2005 Share Posted March 21, 2005 at increased pressures, actually, they have Link to comment Share on other sites More sharing options...
jdurg Posted March 21, 2005 Share Posted March 21, 2005 Yeah, I think Helium is one of the only elements that cannot exist as a solid at atmospheric pressure. Link to comment Share on other sites More sharing options...
budullewraagh Posted March 21, 2005 Share Posted March 21, 2005 i think it can be, but it just needs to be ever so slightly above absolute zero Link to comment Share on other sites More sharing options...
H2SO4 Posted March 22, 2005 Author Share Posted March 22, 2005 Ya, i meant at elevated pressusers Can superfluidity occur in other element than helium? Link to comment Share on other sites More sharing options...
BenSon Posted March 22, 2005 Share Posted March 22, 2005 I dont think so all other elements solidify at too high temperatures. ~Scott Link to comment Share on other sites More sharing options...
The Thing Posted March 23, 2005 Share Posted March 23, 2005 We don't usually try to solidify gases such as Nitrogen without increasing pressure. And helium is the only gas I know of that shows superfluidity near 0K. Any researchers there knows? Link to comment Share on other sites More sharing options...
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