Chromium
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Chromium is a chemical element, having the chemical symbol Cr.
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Its atomic number (the number of protons) is 24. It has a Standard Atomic Weight of 51.9961(6), and is typically found as a solid in its elemental form.
Chromium is considered to be a member of the "Transition metal" class of elements, has a boiling point of 2,671 °C , and a melting point of 1,907 °C .