Atomic Number: 1
Atomic Weight: 1.00794
Melting Point: 13.81 K (-259.34C or -434.81F)
Boiling Point: 20.28 K (-252.87C or -423.17F)
Density: 0.00008988 grams per cubic centimeter
Phase at Room Temperature: Gas
Element Classification: Non-metal
Period Number: 1 Group Number: 1 Group Name<: none

HYDROGEN
-from hydro and gen or water-forming. The most abundant element in the universe. It is the lightest of all the elements and has the simpliest structure. The thermonuclear fusion of hydrogen nuclei lights and heats the universe.

Discovery: 1766 by Henry Cavendish of Britain

Uses: Rocket fuel; Luminous paints; Trash converter into methane