Chromium (Cr) — Element Properties, Uses & Facts
Overview
Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.
Electron configuration
The electron configuration of Chromium is [Ar] 3d5 4s1, with electron shells of 2, 8, 13, 1.
Physical and chemical properties
Chromium is classified as a transition metal. It has an atomic mass of 51.996 and exists as a solid at standard conditions, appearing as silvery metallic.
Real-world uses of Chromium
As a transition metal, Chromium is typically used in alloys, industrial manufacturing, electronics, or as a catalyst in chemical reactions.
Interesting facts about Chromium
- Chromium has the atomic number 24 and chemical symbol Cr.
- It belongs to period 4, group 6 of the periodic table.
- Chromium was discovered by Louis Nicolas Vauquelin.
Explore Chromium interactively
Want to compare Chromium with other elements or see it highlighted on the full table? Open the interactive periodic table and click on Cr to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.
What is Chromium used for?
As a transition metal, Chromium is typically used in alloys, industrial manufacturing, electronics, or as a catalyst in chemical reactions.
What is the atomic number of Chromium?
The atomic number of Chromium is 24, meaning it has 24 protons in its nucleus.
What is the electron configuration of Chromium?
The electron configuration of Chromium is [Ar] 3d5 4s1.
Is Chromium a metal, nonmetal, or metalloid?
Chromium is classified as a transition metal.