All 118 elements on the standard 18-column layout, with the lanthanide and actinide f-block shown as two strips below. Click any element — or tab to it and press Enter — to see its atomic mass, category, group, period, state at standard conditions, and electron configuration. Masses are standard atomic weights; for elements with no stable isotope the value is the most stable known. Everything runs in your browser.
Scan the table
Elements are arranged by atomic number across the standard 18-column layout, colour-coded by category.
Select an element
Click a tile, or tab to it and press Enter, to load its full details into the panel below.
Read the details
The panel lists mass, category, group, period, physical state and electron configuration.
Questions
What does each element show?
Click any element to see its atomic number, symbol, name, standard atomic mass, category, group, period, state at standard conditions and electron configuration.
Are all 118 elements included?
Yes — from hydrogen (1) to oganesson (118), including the lanthanide and actinide f-block series shown as two rows below the main table.
What do the colours mean?
Each colour marks an element category — alkali metals, noble gases, halogens, transition metals and so on — explained in the legend below the table.