Each particle contained in hydrogen gas is made up of two identical hydrogen atoms chemically joined together. hydrogen gas is

Hydrogen Gas is an element. Hydrogen gas was first produce on the 16th century and it was odorless, colorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H2. It also used to produced ammonia for agricultural fertiliser (the Haber process) and also methanol and cyclohexane.