
Hydrogen - Wikipedia
Under standard conditions, hydrogen is a gas of diatomic molecules with the formula H2, called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen …
What is h2 in chemistry? - California Learning Resource Network
Apr 18, 2025 · Hydrogen (H 2), a diatomic molecule consisting of two hydrogen atoms covalently bonded, holds a position of paramount importance in chemistry, physics, and increasingly, in …
Hydrogen (H) - Definition, Preparation, Properties, Uses, …
Jan 21, 2025 · Hydrogen gas (H₂) consists of two hydrogen atoms bonded together. Each hydrogen atom has one proton in its nucleus and one electron. In the hydrogen molecule, the …
Hydrogen - Reactivity, Uses, Properties | Britannica
Dec 7, 2025 · One molecule of hydrogen dissociates into two atoms (H 2 → 2H) when an energy equal to or greater than the dissociation energy (i.e., the amount of energy required to break …
Hydrogen - Formula, Properties, Uses, Facts - Study Chemistry
Hydrogen, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable gaseous chemical substances among the periodic table family
H2 Definition - Intro to Chemistry Key Term | Fiveable
H2 is the chemical formula for the diatomic molecule of hydrogen, which is the simplest and most abundant element in the universe. This term is crucial in understanding the phases and …
3.2: Hydrogen - The Simplest Atom - Chemistry LibreTexts
This page discusses hydrogen (H), the first element, primarily as the diatomic molecule (H2), a colorless, odorless gas used in industries like ammonia and methanol production.
Hydrogen — Overview & Properties - Expii
H2 has no color, odor, or taste. It is also non-toxic, but it is highly combustible or flammable. In the 1700s, Henry Cavendish reacted metallic compounds with acid to generate a gaseous …
Hydrogen - Simple English Wikipedia, the free encyclopedia
Hydrogen is the lightest and most abundant element in the universe. It is the simplest element and the first in the periodic table. It has the chemical symbol H and atomic number 1, which means …
China’s Unitree 1.8m humanoid robot knocks out rival bot in …
4 days ago · Unitree's next-gen humanoid robot, the H2, showcased its power in a combat test, throwing punches and kicks, even breaking pieces off the company’s smaller bot.