Chromium(II)
Chromium(II) or Chromium 2+ is a chemical element with the symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium is also the main additive in stainless steel, to which it adds anti-corrosive properties.
Properties[edit | edit source]
Chromium(II) is a strong reducing agent. It exists in several states of oxidation, the most stable being the divalent state, Cr(II). The Cr(II) ion is readily oxidized by atmospheric oxygen to Cr(III), which forms a protective oxide layer on the metal surface.
Uses[edit | edit source]
Chromium(II) compounds are used in the textile industry as mordants, and by the aircraft and automotive industries for corrosion resistance. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel.
Health Effects[edit | edit source]
Chromium(II) compounds can be toxic if ingested or inhaled. The health effects depend on the route of exposure and the form of the chromium.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
