Hydrogen is easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water. It was given the name of Rogue Element by Mendeleev.

Atomic Weight:  1.008
Density:        0.0899 g/l
Melting Point:  -259.14 °C
Boiling Point:  -252.87 °C