• A hard, brittle steel-gray metallic element whose atomic number is 24. It has nearly 20 known isotopes, of which 4 are stable. The compounds it forms generally have varied and intense colors. It is frequently alloyed with, or plated onto other metals, contributing hardness, heat resistance, strength, and corrosion resistance. Its chemical symbol is Cr.
  • chemical symbol Cr
  • Within the YCbCr color model, one of the two color-difference signals. The other is Cb (2).

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