NO. 024Transition

Cr

Chromium

Chromium is a shiny, hard metal known for its corrosion resistance and is widely used in stainless steel and chrome plating.

Crystal Structure

Body-centered cubic (bcc)

Atomic Mass52 u

Density7.19 g/cm³

Melting Point2180 K

Boiling Point2944 K

Atomic Radius128 pm

Electronegativity1.66

Ionization Energy653 kJ/mol

Electron Affinity65 kJ/mol

Bonding TypeMetallic

Oxidation States2, 3, 6

Acid/BaseCan act as acid or base

ReactivityLow

Electron Configuration

[Ar] 3d5 4s1

Discovered ByLouis Nicolas Vauquelin

Year1797

Known Isotopes

Cr-50Cr-52Cr-53Cr-54