Interactive Periodic Table
All 118 elements with nine ways to explore them: hover for quick facts, click for the full story, colour the table by any property, watch states change with temperature, quiz yourself, or build a formula by clicking tiles.
Tip: scroll the table sideways, or switch views.
How to use this periodic table
Hover (or focus with the keyboard) over any tile for a quick summary; click to open the full drawer with atomic data, physical properties, uses, history, compounds, safety notes and practice questions. Every element also has a dedicated page — see the full element index.
The mode tabs unlock different lenses: Properties turns the table into a heat map of density, electronegativity or any other value; Trends visualises the classic periodic trends with explanations; State/temperature adds a slider from 0 to 6000 K; Discovery replays 3,000 years of chemistry history; Quiz hides the labels and challenges your memory; Formula builder turns tiles into a chemical keyboard; and Compare puts up to four elements side by side.
Reading the table in ten seconds
Rows are periods — the number of electron shells. Columns are groups — the number of outer electrons, which is why elements in a column react alike. Metals fill the left and centre, nonmetals the upper right, with the metalloid staircase between. For the full walkthrough, read How to Use the Periodic Table.
Frequently asked questions
How many elements are on the periodic table?
118 confirmed elements, from hydrogen (1) to oganesson (118). The last four — nihonium, moscovium, tennessine and oganesson — were officially named in 2016.
What do the colours on this periodic table mean?
In standard view, colours mark element categories: alkali metals, alkaline earth metals, transition metals, post-transition metals, metalloids, reactive nonmetals, noble gases, lanthanides and actinides. Other modes recolour the table by property values, phase or discovery era.
Why are two rows shown below the main table?
The lanthanides (57–71) and actinides (89–103) actually belong inside periods 6 and 7, but pulling them out keeps the table narrow enough to read. The “57–71” and “89–103” markers show where they slot in.
Can I use this periodic table on my phone?
Yes — the table scrolls sideways on small screens, and a list view puts every element one tap away. All nine modes work on mobile.
Is this periodic table free to use?
Completely free, no account needed. There's also a printable version with colour, black-and-white and blank-quiz layouts.