Melting points elements (data page) - wikipedia, Reference kelvin celsius fahrenheit comments; 1 hydrogen ( 2) : 13.99 −259.16 ° −434.49 °: wel: 14.01 −259.14 ° −434.45 °: crc −259.16 °. https://en.wikipedia.org/wiki/Melting_points_of_the_elements_%28data_page%29