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Hydrogen (H)
Element with atomic number 1, category: Nonmetal, a gas at room temperature.
Element 1 of 118
Nonmetal
Hydrogen
Group 1, Period 1
Common Uses
Rocket fuel, ammonia production
Electron Diagram
About Hydrogen
Hydrogen is a chemical element with the symbol H and atomic number 1, meaning every atom has 1 protons in its nucleus. It is classed as Nonmetal and is a gas at room temperature. Its atomic mass is about 1.008 atomic mass units (u).
On the periodic table, Hydrogen sits in group 1, period 1, which determines how many electron shells it has and how it tends to react with other elements.
Uses of Hydrogen
In daily life and industry, Hydrogen is used for Rocket fuel, ammonia production. These uses are closely tied to the typical properties of elements in the Nonmetal category.
Electron Structure of Hydrogen
Using a simplified electron shell model (at most 2 electrons in the first shell, 8 in the second, 18 in the third, and so on), Hydrogen has 1 electron shells, with an approximate arrangement of 1 electrons from the innermost shell to the outermost. This is a simplified learning model, not the full electron configuration that accounts for the s, p, d and f subshells.
Explore Other Elements
Want to see another element or try the element symbol quiz? Go back to the Interactive Periodic Table to explore all 118 chemical elements.