hidrogén2

Hidrogén2 is the chemical formula for a molecule composed of two hydrogen atoms. It is more commonly known as dihydrogen. At standard temperature and pressure, dihydrogen exists as a colorless, odorless, and tasteless gas. It is the simplest and most abundant chemical substance in the universe, making up approximately 75% of its elemental mass. In its elemental form, hydrogen is diatomic, meaning it exists as H2 molecules.

The hydrogen atom has a simple structure, consisting of a single proton and a single electron. In dihydrogen, these two atoms share their electrons in a covalent bond, creating a stable molecule. Dihydrogen is highly flammable and reacts vigorously with oxygen to produce water, releasing a significant amount of energy. This property has led to its investigation as a potential clean fuel source, often referred to as hydrogen fuel.

Dihydrogen plays crucial roles in various natural processes. It is essential for life on Earth, being a component of water and organic molecules. In stars, dihydrogen is the primary fuel, undergoing nuclear fusion to produce helium and release vast amounts of energy. It is also used industrially in processes such as ammonia production, petroleum refining, and the hydrogenation of oils.