At what temperature would hydrogen have to be in order for it to become a liquid? and a solid?

Question

At what temperature would hydrogen have to be in order for it to become a liquid? and a solid?

Answer 1

When you talk about melting and boiling points you also need to consider the atmospheric pressure. For complete information you need to look at a phase diagram. At atmospheric pressure I believe:

Melting point: -259.14 °C

Boiling point: -252.87 °C

Answer 2

i think it is 127* but im not tottaly sure :P