Hydrogen Element Symbol H

H is the chemical element symbol for hydrogen, atomic number 1. Molecular hydrogen is written H₂, not H alone. H identifies the element hydrogen in periodic tables and chemical formulas. Its atomic number is 1. For Hydrogen Element Symbol, H is encoded as U+0048, and its Unicode name is LATIN CAPITAL LETTER H. H is the chemical symbol for hydrogen and corresponds to atomic number 1. It is a single capital Latin letter, encoded as U+0048. The symbol is simple, but its role must be identified from context because the same letter is also used for quantities such as enthalpy. Element notation and molecular notation are not interchangeable. H identifies hydrogen as an element symbol. H₂ describes molecular hydrogen, and H⁺ adds a positive ionic charge. In H₂O, the subscript two applies to hydrogen atoms within the water formula. Copying only H from one of these expressions changes the chemical information. When H appears in an equation, a nearby definition, formula, or table heading should show whether it means hydrogen or a variable. This page covers the element identity only. The Enthalpy Symbol page handles H as a thermodynamic quantity, while this page explains capitalization, copying, and chemical examples. The Unicode character is LATIN CAPITAL LETTER H. It can be inserted directly as UTF-8 text or represented in HTML as H or H. Because it is an ordinary Latin letter, no special glyph guarantees a chemical meaning; the surrounding content supplies that meaning. For general readers, write “hydrogen (H)” on first use. In specialist formulas, preserve subscripts, charges, and state labels attached to the complete species. Do not use the single H character as a replacement for H₂ when the molecular form is required. H is the IUPAC chemical symbol for hydrogen. It is a case-sensitive element symbol formed from an ordinary Latin capital letter, so it should not be described as a unique Unicode pictograph.