
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 …
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
Hydrogen (H) - Definition, Preparation, Properties, Uses, …
Jan 21, 2025 · We write H2 instead of H because hydrogen naturally exists as a diatomic molecule, meaning two hydrogen atoms bond together to form H2, the most stable form of …
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 - Reactivity, Uses, Properties | Britannica
5 days ago · 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 …
Dummies Guide To Hydrogen - MHI
Feb 5, 2013 · Hydrogen is the lightest and simplest element with the symbol H. It consists of only one electron and one proton and, under normal conditions, it exists primarily in its diatomic …
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.
H2 Definition - Intro to Chemistry Key Term | Fiveable
Hydrogen gas (H2) is a colorless, odorless, and highly flammable gas that is the lightest element in the periodic table. H2 is a diatomic molecule, meaning it consists of two hydrogen atoms …
Definition of hydrogen (H2) - Chemistry Dictionary
Definition of hydrogen (H2) the lightest known gas; hydrogen vapors are highly flammable, colorless, odorless, tasteless, and nontoxic. Hydrogen is used as a means of providing a …
Hydrogen - NIST Chemistry WebBook
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the …