Periodic Table
Interactive periodic table with element properties and search
How to use Periodic Table
- 1Enter an element symbol or atomic number to look it up.
- 2Browse or filter by group, period, or category if offered.
- 3Read properties such as atomic mass, group, and classification.
The periodic table at a glance
Organised by increasing atomic number and electron shellsThe table arranges elements by atomic number; rows are periods and columns are groups with similar chemistry.
Position predicts behaviour: metals, nonmetals, and noble gases cluster in regions, making trends like electronegativity easy to read.
Frequently asked questions
What does the atomic number mean?
It is the count of protons in the nucleus and uniquely identifies each element.
Why are some elements grouped?
Elements in the same column share valence-electron patterns, so they react in similar ways.
What are the blocks?
s, p, d, and f blocks reflect which subshell is being filled, linking position to electron structure.
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