New! Discover the fascinating world of atoms: To the Atom Page
Chemistry Basics
Interactive Periodic Table
The periodic table of elements is a powerful tool in chemistry. Click the link to explore it!
To the Interactive Periodic TablePeriodic Table Practice CardsWhat is the periodic table?
The periodic table of elements (PSE) is a table in which all chemical elements are arranged. It was developed by the chemists Mayer and Mendeleev.
In the periodic table, elements are arranged by increasing atomic number (number of protons in the atomic nucleus). Elements with similar chemical properties are in the same column (group).
The colors in the interactive periodic table (on the separate page) indicate the different element groups:
- ■ Nonmetals
- ■ Noble gases
- ■ Alkali metals
- ■ Alkaline earth metals
- ■ Metals and metalloids