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Periodic Table Explorer
Click any element to see its atomic number, mass, category, period and group.
- Click an element, or search by name/symbol
- Read its properties in the panel below
Runs entirely in your browser.
H1
Hydrogen
Reactive nonmetal · Period 1 · Group 1
Atomic mass: 1.008
Alkali metal
Alkaline earth metal
Transition metal
Lanthanide
Actinide
Post-transition metal
Metalloid
Reactive nonmetal
Halogen
Noble gas
Unknown properties
Frequently asked questions
- All 118 currently known elements, from hydrogen (1) through oganesson (118), including the lanthanide and actinide rows.
- Click any element to see its atomic number, atomic mass, category, period, group, and other key properties in the detail panel.
- Yes — use the search box to jump straight to an element by its name or chemical symbol.
- Yes, it is completely free with no account or sign-up, and it runs entirely in your browser.
- No. It works directly in any modern browser — no software install, no account, no email required.
How many elements are in this periodic table?
What information can I see for each element?
Can I search for an element by name instead of clicking?
Is this tool free and does it need an account?
Do I need to install anything?
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