Hydrogen Quick Facts
  • Hydrogen is an essential element of our world. In fact, hydrogen makes up about 75% of the mass of the universe. It is found in the sun and most stars.
  • Hydrogen is the simplest and lightest element on the periodic table of elements.
  • Hydrogen gas is always bonded to itself or something else to fill its outer shell. That is why hydrogen gas is represented as H2.
  • Hydrogen is odorless, colorless, and tasteless; therefore, it is undetectable by human senses.
  • Hydrogen is highly flammable but will not ignite unless an oxidizer (air) and ignition source are present.
  • Hydrogen has been safely produced, stored, transported, and used in large amounts in industry by following standard practices that have been established in the past 50 years.