Ditto Emiluu post.
Original post by BelleWest23
Can they be liquefied?
Of course they can like all known another elements of our periodic table. The term is melting point! Hydrogen and Helium are something special, as they have them at very low temperatures.
The melting point of hydrogen is -259.2 °C, and the melting point of helium is -272.2 °C. So the answer is yes with extreme cooling.
Original post by Kallisto
Of course they can like all known another elements of our periodic table. The term is melting point! Hydrogen and Helium are something special, as they have them at very low temperatures.
Thank you and yes, melting point sorry
Original post by Cryoraptor
The melting point of hydrogen is -259.2 °C, and the melting point of helium is -272.2 °C. So the answer is yes with extreme cooling.
thank you so much!
Original post by BelleWest23
Thank you and yes, melting point sorry
It was a pleasure to refresh your memory!
the melting point is one of the most important and frequent properties, they don't be forgotten. 
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