Learn the elements
Practice Mode:
Elements:
What is the name of this element?
Click any element to see its details including name, symbol, atomic number, mass, and a fun fact!
Elements are color-coded by their category. Use the legend below to understand the groups.
Why two rows below? The lanthanides (57-71) and actinides (89-103) are shown separately to keep the table compact. They actually belong in row 6 and row 7 where the gray placeholders are, but displaying them there would make the table 32 columns wide!
Soft, shiny metals that react violently with water. Found in column 1. Examples: Lithium (Li), Sodium (Na), Potassium (K).
Shiny, silvery-white metals that are less reactive than alkali metals. Found in column 2. Examples: Magnesium (Mg), Calcium (Ca).
Hard metals that conduct electricity and heat well. Many are used in jewelry and construction. Examples: Iron (Fe), Copper (Cu), Gold (Au), Silver (Ag).
Softer metals found to the right of transition metals. Examples: Aluminum (Al), Tin (Sn), Lead (Pb).
Elements with properties of both metals and nonmetals. Often used in electronics. Examples: Silicon (Si), Boron (B), Arsenic (As).
Elements that are not shiny and don't conduct electricity well. Essential for life. Examples: Carbon (C), Nitrogen (N), Oxygen (O), Sulfur (S).
Very reactive nonmetals in column 17. Often form salts when combined with metals. Examples: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I).
Very stable, unreactive gases in column 18. Used in lighting and signs. Examples: Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr).
Rare earth metals used in electronics, magnets, and lasers. The top row below the main table. Examples: Neodymium (Nd), Europium (Eu).
Radioactive metals in the bottom row below the main table. Includes nuclear fuels. Examples: Uranium (U), Plutonium (Pu), Thorium (Th).