← All ToolsFree · no sign-up
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