A chemical element is a species of atom defined by its number of protons. The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8: …

Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.

The periodic table of the elements The periodic table is an arrangment of the chemical elements ordered by atomic number so that periodic properties of the elements (chemical periodicity) …

May 16, 2019 · The Chemistry Division's Periodic Table describes the history, properties, resources, uses, isotopes, forms, costs, and other information for each element.

Nov 21, 2024 · Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications.

EniG. Periodic table of the elements - a very attractive periodic table, available in six languages (German, English, French, Croatian, Italian, and Spanish) and twelve temperatures (ITS-90), …

An up-to-date periodic table with detailed but easy to understand information

All matter in the natural world is composed of one or more of the 92 fundamental substances called elements. An element is a pure substance that is dist...

Jan 6, 2026 · element (plural elements) One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are …

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