Alkali metalAlkaline earthTransition metalPost-transition metalMetalloidReactive nonmetalHalogenNoble gasLanthanideActinide

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Temperature

Periodic trends

Plot

What you can do in the lab

Periodic Table Lab is a free, interactive periodic table for students, teachers and anyone curious about chemistry. Pick any element to see what it looks like inside, how it behaves at different temperatures and where it sits in the patterns of the table.

3D or scribbled atomsEvery element's Bohr atom, orbital cloud and crystal lattice, as a 3D model or as pencil sketches you can rotate.

Ions, isotopes and decayAdd or remove electrons, change the neutron count and watch unstable nuclei decay into new elements.

Spectra and flame testsBright-line emission spectra and flame colours for the elements chemists test most often.

Periodic trendsHand-drawn charts of electronegativity, radius, ionization energy, density and more against atomic number.

Chemistry toolsMolar mass, grams to moles to particles, empirical formulas from percentages, and an equation balancer.

Quizzes and flashcardsFind-the-element quizzes, a 60-second challenge and spaced-repetition flashcards.

Discovery timelineWatch the table fill in from ancient metals to the superheavy elements made in the 2000s.

Notes and drawingsDoodle on the table, pin sticky notes to elements and print flashcards or worksheets.

Values are standard reference figures at 1 atm: melting and boiling points in kelvin, density at room temperature, electronegativity on the Pauling scale. Properties of elements 104 to 118 and some past fermium are predicted or estimated. Neutron counts use the most common isotope, approximately. The shells, orbital clouds and lattices are schematic, not to scale. Ionization energies, electron affinities, abundances and hazards are rounded reference values; the isotope stability check and decay chains are simplified. Shortcuts: ← → step through elements (with a tile focused, arrows move around the table), / search, S switch 3D or scribbles, D pencil tool, Esc stop the quiz or pencil.

Periodic Table Lab

Simulation

Compare nuclei

Periodic trends

States of matter

Isotopes and isobars

Isotopes

Isobars

Molar mass calculator

Formula from percentages

Equation balancer

Compare elements

Pop quiz

Discovery timeline

Print

What you can do in the lab

Every element has its own page

Alkali metals

Alkaline earths

Transition metals

Post-transition metals

Metalloids

Reactive nonmetals

Halogens

Noble gass

Lanthanides

Actinides

Write to the lab