Explore all 118 elements with atomic number, mass, electron config, melting point, and uses. Filter by category and state. Free interactive periodic table.
There are currently 118 confirmed elements. Elements 1-94 occur naturally. Elements 95-118 are synthetic — created in particle accelerators. The most recently confirmed elements are Nihonium (113), Moscovium (115), Tennessine (117), and Oganesson (118).
Hydrogen (element 1) makes up about 75% of all matter in the universe. Helium is second at about 24%. On Earth, oxygen is the most abundant element by mass (46% of Earth's crust), followed by silicon (28%).
Elements are classified as: Alkali metals, Alkaline earth metals, Transition metals, Post-transition metals, Metalloids, Nonmetals, Halogens, Noble gases, Lanthanides, and Actinides. Our table color-codes each category for easy identification.
Electron configuration describes how electrons are arranged in shells and subshells around an atom. Example: Carbon (Z=6) is 1s²2s²2p². Our periodic table shows the full electron configuration for every element.
Oganesson (Og, element 118) is the heaviest confirmed element with an atomic mass of about 294. It is a synthetic noble gas so unstable that only a few atoms have ever been created, existing for milliseconds.
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