The complete interactive periodic table of elements with all 118 elements – names, symbols, atomic number, atomic mass, density, melting point, boiling point, electron configuration, valency, oxidation states, common compounds, uses, discovery year and discoverer. Click any element to view full details. Color-coded by category (alkali metals, alkaline earth metals, transition metals, metalloids, non-metals, halogens, noble gases, lanthanides, actinides, post-transition metals).
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The periodic table of elements is the most important reference tool in chemistry. It organizes all 118 known chemical elements by increasing atomic number into 7 periods (rows) and 18 groups (columns). Elements in the same group share similar chemical properties because they have the same number of valence electrons.
Elements are also classified by the orbital that receives the last electron: the s-block (groups 1–2 + He), p-block (groups 13–18), d-block (transition metals) and f-block (lanthanides and actinides).
Each cell shows the atomic number (top), the element symbol (large, center) and the element name. Click a cell to see the atomic mass, electron configuration, melting and boiling points, valency, common compounds and uses. Use the search box to find any element by name, symbol or atomic number.
There are 118 confirmed elements, from Hydrogen (1) to Oganesson (118). All are officially recognized by IUPAC. Elements 1–94 occur naturally; 95–118 are synthetic.
It is a chart arranging all chemical elements by atomic number, electron configuration and recurring chemical properties. Mendeleev published the first widely accepted version in 1869.
Element 67 is Holmium (Ho), a rare-earth lanthanide. It has the highest magnetic strength of any natural element and is used in powerful magnets, nuclear control rods and lasers.
By atomic number in rows (periods) and columns (groups). Elements in the same group share similar chemical behavior due to identical valence electrons.
Dmitri Mendeleev (1869) created the first widely accepted version. Henry Moseley (1913) refined it by atomic number instead of atomic mass.
A horizontal row. There are 7 periods, each representing a new electron shell.
18 groups (vertical columns). Each group has similar valence electrons and chemistry.
7 periods. Period 1 has 2 elements; periods 6 and 7 each include 32 (with f-block).
On the left and center. About 80% of elements are metals — alkali, alkaline earth, transition, post-transition, lanthanides and actinides.
Read left to right, top to bottom. Each cell: atomic number (top) → symbol (large) → name. Colors show category. Click a cell for full details.
Safely: carbon, gold, silver, tin, iron. Never lick sodium, potassium, mercury, arsenic, lead, cadmium, beryllium, uranium, polonium or radium — they are toxic, reactive or radioactive.
Electrons in the outermost shell. They determine an element's chemistry. Group 1 has 1, Group 17 has 7, Noble gases have 8 (or 2 for He).
Yes — use your browser's Print → Save as PDF option on this page to get a clean printable PDF version with all element details.
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All information on this interactive periodic table is provided for educational purposes only. While we strive for accuracy using IUPAC and CRC reference data, UniversityScope makes no warranties about completeness or reliability. Always cross-check values for academic or professional use. We are not liable for any loss or damage from use of this content.
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