Hydrogen Facts
Name: Hydrogen, from Greek words meaning "water-forming"
Chemical Symbol: H
Dicoverer: Henry Cavendish
Atomic number: 1
Atomic weight: 1.008
Colorless gas
Has no taste
Has no smell
Low density gas
Inflammable
Insoluble in water
Comprises about 99.88% of the Universe
Stable isotopes: protium, deuterium
Radioactive isotope: tritium