Hydrogen

Hydrogen
Hydrogen was discovered as a separate element by Henry Cavandish in 1766. The physical properties of hydrogen are as follows. Hydrogen is categorized as an alkali metal. In Hydrogen’s physical state (at 20°C & 1atm) it is a gas. Its crystal structure is hexagonal in shape. Hydrogen has an atomic mass of 1.00794 atomic mass units, making it the lightest known element. Hydrogen has a boiling point of 20.268 K, 252.732°C, and 422.918°F. It has a melting point of 14.025K or 434°F. Also it has Heat of Vaporization of 0.44936kJ/mol. Hydrogen will also become a liquid at -240°C and a pressure of 13atm. Hydrogen is slightly soluble in water. This element also h...