Periodic Table Explorer

The Periodic Table Explorer is a free online tool that interactive periodic table with all 118 elements. search, filter by category, view properties, and explore states of matter at different temperatures.. It runs entirely in your browser with no installation or sign-up needed.

Atomic number, symbol, name, mass, category, electron configuration, electronegativity, density, melting/boiling points, discovery year, and common uses.

Drag from -273 to 6000°C to color-code elements by state of matter at that temperature (solid/liquid/gas/unknown).

Yes — all data is inline, no API needed, runs entirely in your browser.

Absolutely. The Periodic Table Explorer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the Periodic Table Explorer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the Periodic Table Explorer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

The Periodic Table Explorer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

There are 118 confirmed chemical elements on the modern periodic table, numbered by their atomic number from hydrogen (1) to oganesson (118). The first 94 occur naturally on Earth, at least in trace amounts, while the heaviest, from roughly atomic number 95 onward, are synthetic and made in particle accelerators or nuclear reactions. The count grew over time as new elements were created and verified; oganesson, the current end of the table, was officially named in 2016. Many of the superheavy synthetic elements exist for only fractions of a second, which is why some of their properties have never been measured. This Periodic Table Explorer includes all 118, so you can search any element by name, symbol, or number and open its full data panel without scrolling through a textbook.

Metals make up most of the table: they conduct heat and electricity well, are usually shiny and malleable, and tend to lose electrons in reactions. Metals include the alkali metals, alkaline earth metals, transition metals, and post-transition metals. Nonmetals, clustered toward the upper right, are poor conductors, often brittle or gaseous, and tend to gain electrons; oxygen, nitrogen, and the halogens belong here. Metalloids are the in-between "staircase" elements such as silicon, germanium, and arsenic, which show a mix of both behaviours and are prized as semiconductors. The boundary follows a diagonal step pattern on the right side of the table rather than a straight line. This explorer colour-codes all ten of these families, so you can filter by category with one click and see exactly where each group sits.

Only two elements are liquid at standard room temperature, around 25 degrees Celsius: mercury (Hg), which melts at -38.83 degrees Celsius, and bromine (Br), which melts at -7.2 degrees Celsius. Both stay liquid because their melting points fall below room temperature while their boiling points sit well above it. Two more, caesium and gallium, melt just above room temperature, around 28 to 30 degrees Celsius, so they turn liquid in a warm hand or a hot room but are technically solid at 25 degrees. Everything else is either solid or gas at normal conditions. You can see this directly by turning on Temperature Mode in the explorer and dragging the slider to 25 degrees; mercury and bromine light up as liquids while the rest of the table stays solid or gas.

Electron configuration describes how an atom's electrons are distributed across its energy levels and subshells. It is written as a series of terms like 1s2 2s2 2p6, where the number is the shell, the letter (s, p, d, or f) is the subshell type, and the superscript is how many electrons sit there. To save space, the explorer uses noble-gas shorthand: aluminium appears as [Ne] 3s2 3p1, meaning it has the same core as neon plus three outer electrons. Those outermost electrons, the valence electrons, largely determine how an element bonds and reacts, which is why configuration matters so much in chemistry. Open any element's detail panel in this tool to see its full shorthand configuration alongside its atomic mass, electronegativity, and other properties.

Electronegativity measures how strongly an atom pulls shared electrons toward itself within a chemical bond. The explorer uses the Pauling scale, the most common version, which runs from about 0.7 up to 3.98. Fluorine is the most electronegative element at 3.98, followed by oxygen and chlorine, while the heavy alkali metals like caesium and francium sit at the low end near 0.7. Generally, electronegativity rises as you move up and to the right across the table. Noble gases such as helium, neon, and argon are shown as N/A because, with full outer electron shells, they rarely form bonds at all, so a bonding-based value is undefined or not meaningfully assigned. Click any element in the explorer to view its Pauling electronegativity and compare reactive nonmetals against stable noble gases at a glance.