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).

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.

Helium, most stable of all elements.

Have they even solidified Helium yet?

yes. it has magnetic properties, supposedly

yes. it has magnetic properties, supposedly

 

Isn't it about time to swap that hat for bunny ears?

dr lang likes being santa. he'll take it off sometime soon

I guess at decreased pressures they could solidify helium, i don't see why not.

at increased pressures, actually, they have

Yeah, I think Helium is one of the only elements that cannot exist as a solid at atmospheric pressure.

i think it can be, but it just needs to be ever so slightly above absolute zero

Ya, i meant at elevated pressusers

 

 

Can superfluidity occur in other element than helium?

I dont think so all other elements solidify at too high temperatures.

 

~Scott

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?