Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H2, sometimes called dihydrogen, [11] hydrogen gas, molecular hydrogen, or simply hydrogen. It is colorless, odorless, [12] non-toxic, and highly combustible.

2025年1月26日 · hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also

2025年1月27日 · Hydrogen is the most abundant element in the universe; it is also the simplest and the lightest. Although hydrogen constitutes nearly 75% of all the universe’s matter, only a small fraction of the hydrogen accessible on Earth exists in …

Hydrogen is the raw fuel that most stars 'burn' to produce energy. The same process, known as fusion, is being studied as a possible power source for use on earth. The sun's supply of hydrogen is expected to last another 5 billion years. From the Greek word hydro (water), and genes (forming).

Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

Hydrogen is a gas at normal temperature and pressure, but hydrogen condenses to a liquid at minus 423 o F (-253 o C). Energy carriers transport energy in a usable form from one place to another. Elemental hydrogen is an energy carrier that must be produced from another substance.

What is Hydrogen? - Hydrogen is a highly combustible diatomic gas with the molecular formula H2. Learn the Preparation, Uses of Hydrogen, Atomic Mass of Hydrogen, Atomic Number and Its Properties with FAQs.

2025年1月31日 · Geologic hydrogen, also known as natural hydrogen, is hydrogen gas that is naturally found below the surface of the Earth. Unlike hydrogen produced through industrial processes, geologic hydrogen is sourced by and stored in rocks in the ground, similar to traditional petroleum resources.Learn More:USGS Geologic HydrogenGeologic Hydrogen …

hydrogen, Lightest chemical element, chemical symbol H, atomic number 1. A colourless, odourless, tasteless, flammable gas, it occurs as the diatomic molecule H 2. Its atom consists of one proton (the nucleus) and one electron; the isotope s deuterium and tritium have an additional one and two nuclear neutrons, respectively.

2025年1月21日 · Hydrogen is the simplest and most abundant element in the universe, consisting of just one proton and one electron. This lightweight, colorless gas is found in great abundance in stars and gas giants and is a fundamental building block in the chemistry of life.