They were measured, not calculated.
The biliong point of hydrogen is -252,87 0C. The melting point of hydrogen is -259,14 0C.
Melting: -259.14 C Boiling: -252.87 C
hydrogen
hydrogen bonding increases the intermolecular attractions and therefore increases the boiling point and melting point.
The freezing point (same as melting point) of H2 is 14.01 K (−259.14 °C, −434.45 °F)The boiling point of H2 is 20.28 K (−252.87 °C, −423.17 °F)
melting: -259.14 °C boiling: -252.87 °C to find it in degrees F, multiply by 1.8 and then add 32.
Water has a high melting point and boiling point because of hydrogen bonds
Hydrogen melts at -259.14 °C and boils at -252.87 °C
Its melting point is -83.6 °C and boiling point is 19.5 °C. This implies that hydrogen fluoride would be in the gaseous state at room temperature. Its chemical formula is HF.
The melting point of neptunium is 639 0C.The calculated boiling point of neptunium is 4 174 0C.
The boiling point of hydrogen is -252.88°C. or -423.18 °F
More or less of a melting and boiling point than what? Water? Iron? Hydrogen? More information needs to be provided before this can be answered.