The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are protons. Besides the common H1 isotope, hydrogen exists as the stable isotope deuterium and the unstable, radioactive isotope tritium.
Chemical symbol is H. A gaseous element that combines with oxygen to form water (H20) and with carbon to form hydrocarbons.
A chemical element, a gas which combines with oxygen to form water, and with other elements to form acids, and is present in all animal tissue.
Element, a constituent of water and many biological compounds.
An element existing as a colorless, odorless, and tasteless gas, possessing one valence electron; atomic weight 1.0079, atomic number 1, specific gravity 0.069. A liter of the gas at sea level and at 0°C weighs 0.08988 g. Three isotopes of hydrogen (protium, deuterium, and tritium) exist, having atomic weights of approx. 1, 2, and 3, respectively.
The most elementary among the 103 fundamental constituents, encompassing solely a solitary atomic entity, comprised exclusively of a sole proton and a solitary electron.
Hydrogen, the most elementary and abundant element in the cosmos, comprises a solitary electron, a negatively charged particle, orbiting around a nucleus housing a sole proton, a positively charged particle. The presence of this nuclear proton within hydrogen enables magnetic resonance imaging (MRI) by exhibiting resonance with radio waves when aligned within a magnetic field.