🧪 Periodic table of elements
All 118 elements — click one for details, train in the quiz, or experiment in the lab.
57–71
Lanthanides
Lanthanides
89–103
Actinides
Actinides
f
↔ scroll the table sideways
Alkali metals
Alkaline earth metals
Transition metals
Post-transition metals
Metalloids
Nonmetals
Halogens
Noble gases
Lanthanides
Actinides
Atomic number
Atomic mass
Period
🎓 Trainer: name the element
10 rounds: which element hides behind the symbol?
⚗️ Lab: virtual reaction
Pick two substances — elements or compounds — and check the reaction.
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📊 Solubility table
| Ion | H⁺ | K⁺ | Na⁺ | Ba²⁺ | Ca²⁺ | Mg²⁺ | Al³⁺ | Zn²⁺ | Fe³⁺ | Cu²⁺ | Ag⁺ | Pb²⁺ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OH⁻ | S | S | S | S | s | I | I | I | I | I | — | I |
| NO₃⁻ | S | S | S | S | S | S | S | S | S | S | S | S |
| Cl⁻ | S | S | S | S | S | S | S | S | S | S | I | s |
| Br⁻ | S | S | S | S | S | S | S | S | S | S | I | s |
| I⁻ | S | S | S | S | S | S | S | S | S | s | I | I |
| S²⁻ | S | S | S | S | — | — | — | I | I | I | I | I |
| SO₄²⁻ | S | S | S | I | s | S | S | S | S | S | s | I |
| CO₃²⁻ | — | S | S | I | I | I | I | I | I | I | I | I |
| PO₄³⁻ | S | S | S | I | I | I | I | I | I | I | I | I |
S — soluble
s — slightly soluble
I — insoluble
— — decomposes