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  1. Element | Secure collaboration and messaging

    Element is a Matrix-based end-to-end encrypted messenger and secure collaboration app. It’s decentralised for digital sovereign self-hosting, or through a hosting service such as Element Matrix …

  2. Periodic Table of Elements - PubChem

    Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or …

  3. Periodic Table - Ptable - Properties

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

  4. List of chemical elements - Wikipedia

    118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic …

  5. Interactive Periodic Table of Elements | PeriodicTableOfElements.org

    The most beautiful interactive periodic table on the web. Explore all 118 elements with real-time temperature visualization, property comparisons, quizzes, and comprehensive element data.

  6. ELEMENT Definition & Meaning - Merriam-Webster

    6 days ago · The meaning of ELEMENT is any of the four substances air, water, fire, and earth formerly believed to compose the physical universe. How to use element in a sentence. Synonym Discussion …

  7. Periodic table | Definition, Elements, Names, Symbols, Groups, …

    5 days ago · Periodic table, in chemistry, is an organized array of all the chemical elements in order of increasing atomic number. When the elements are thus arranged, there is a recurring pattern in …

  8. Chemical elements - Periodic Table

    There are 118 elements on the periodic table. Here's a list of all of the chemical elements of the periodic table ordered by increasing atomic number.

  9. Periodic Table - Periodic Table

    Interactive periodic table of the chemical elements; Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure ...

  10. What Is an Element? Definition, Types, and Examples

    Mar 21, 2026 · An element is a pure substance made of only one kind of atom, defined by the number of protons in its nucleus. Hydrogen has 1 proton, helium has 2, carbon has 6, gold has 79. That proton …