= Chromium
{title2=$\mathrm{Cr}$}
{wiki}
<Chromium> is the <chemical element> with <atomic number> 24 and symbol $\mathrm{Cr}$. It is a <transition metal>. A chromium-rich passive oxide layer helps stainless steel resist corrosion. Chromium(III) and chromium(VI) compounds have substantially different bonding, reactivity, and environmental behavior, so an oxidation state is essential when discussing a chromium compound.<Periodic Table by Royal Society of Chemistry>[Chromium, element data and uses]{ref}
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