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The Chemistry of Chromium

posted Oct 16, 2016, 11:57 PM by Grace Ong   [ updated Dec 17, 2016, 1:22 AM ]
The following post was first posted on Blogger on Thursday, 19 June 2014.



The following slides briefly describe the chemistry of chromium. Topics include
  • 'exceptional' electronic configuration of chromium;
  • various oxidation states of chromium;
  • reactions of common chromium compounds like chromium(III) chloride, chromium(III) nitrate, chromium(III) hydroxide, potassium chromate(VI) and potassium dichromate(VI).
(To access an expandable version, click here to view slides on SlideShare.)

Due to their toxicity, the Ministry of Education, Singapore, has banned the use of chromium compounds in school laboratories.

Although live laboratory demonstrations of chromium reactions are no longer possible, there are many well-made videos which we can use to support the teaching of chromium chemistry, such as the one below by Franklychemistry.


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