Alkali metals
Alkaline earth
Transition metals
Post-transition
Metalloids
Nonmetals
Halogens
Noble gases
Lanthanides
Actinides
⚡ Element Quiz
Test your periodic table knowledge!
Test your periodic table knowledge!
This tool gives you instant access to complete data for all 118 chemical elements. Follow these steps to get the most out of it — no sign-up or download required.
Click any element on the table above to open its full detail panel — atomic number, atomic mass, electron configuration, melting/boiling point, density, common uses and a fun fact.
Search by name, symbol, or number using the search bar in the header. Type "copper", "Cu", or "29" — all three find the same element instantly.
Filter by category by clicking any label in the legend bar (Alkali metals, Noble gases, etc.). Click it again to clear the filter.
Test yourself by clicking "Quiz" in the header — you'll be asked element names, symbols, or atomic numbers with four answer choices.
Download a printable copy by clicking "Print PDF" — your browser's print dialog opens; choose "Save as PDF" for a clean, color-coded reference sheet.
Our interactive periodic table of elements gives you instant access to complete data for all 118 chemical elements. Click any element to explore atomic number, atomic mass, electron configuration, melting point, boiling point, density, real-world uses, and a fascinating fun fact.
Type an element name, chemical symbol, or atomic number in the search bar to instantly find and highlight it. Works for all 118 elements from Hydrogen (H, 1) to Oganesson (Og, 118).
Click any category in the legend to highlight that group — alkali metals, noble gases, transition metals, halogens, lanthanides and more. Perfect for studying element families.
Use the built-in element quiz to memorize element names, symbols, and atomic numbers. Questions get progressively harder as your score grows.
Download a color-coded printable periodic table with all 118 elements. Perfect for classroom display, exam revision, or reference sheets. Click "Print PDF" above.
Use arrow keys (← →) to navigate between elements in the detail panel. Press Escape to close. Designed for fast, efficient chemistry research.
Our interactive periodic table works on desktop, tablet, and mobile. Fully responsive design with touch support for smartphones and tablets.
Cu is the chemical symbol for Copper, element number 29 on the periodic table. The symbol Cu comes from the Latin word Cuprum, named after the island of Cyprus. Copper is a transition metal in Period 4, Group 11 — the same group as Silver (Ag) and Gold (Au). It has an exceptional electron configuration of [Ar] 3d¹⁰ 4s¹ and is one of the best electrical conductors known. Click on Cu in the table above to see all its properties.
Read full Cu guide →