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Application Notes

Chromium • Transition Metal

Primary XPS region: Cr2p
Overlapping regions: Te3d, Zn LMM
Binding energies of common chemical states:

Chemical state Binding energy Cr2p3/2 / eV
Cr metal 574.3
Cr (III) oxide ~576
Cr (VI) oxide ~580

Experimental Information

Interpretation of XPS spectra


crystal structureAbout This Element

Symbol: Cr
Date of Discovery: 1797
Name Origin: Greek chrôma
Appearance: gray
Discoverer: Louis Vauquelin
Obtained From: chromite

Melting Point: 2180 K
Boiling Point: 2944 K
Density[kg/m3]: 7140
Molar Volume: 7.23 × 10-6 m3/mol
Protons/Electrons: 24
Neutrons: 28
Shell Structure: 2,8,13,1
Electron Configuration: [Ar]3d54s1
Oxidation State: 6,4,3,2
Crystal Structure: cubic

Chromium is a malleable hard metal best known for its attractive luster when polished. Chromium gets its name from the Greek word for color due to the many colorful compounds that can be made from it. During the 1800s, chromium was used mainly as a component in paints and tanning salts for leather. Today 85% of its use is in metallic alloys such as stainless steel and anodized aluminum. Traces of chromium can be found in gemstones such as ruby and emerald. Chromium is a common element and
is used in producing synthetic gems.

Application Notes

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