24
Cr
51.996
Chromium
Element 24 · 51.996 u · d-block
transition metal
A hard, lustrous metal named for the Greek word for color. Used in stainless steel and chrome plating.
Phase (STP)
Solid
Melting Point
1907 °C
Boiling Point
2671 °C
Density
7.15 g/cm³
Electronegativity
1.66
Atomic Radius
140 pm
Ionization Energy
653 kJ/mol
Electron Affinity
65 kJ/mol
Discovered
1797 · Louis Nicolas Vauquelin
Electron Configuration
[Ar] 3d5 4s1
Electron Orbitals
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