Chromium: historical information Chromium was discovered by Louis-Nicholas Vauquelin at 1797 in France.
Origin of name: from the Greek word "chroma" meaning "colour",named for the many coloured compounds known for chromium..
Atomic Number: 24
Atomic Weight: 51.9961
Melting Point: 2180 K (1907°C or 3465°F)
Boiling Point: 2944 K (2671°C or 4840°F)
Density: 7.15 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 4 Group Number: 6 Group Name: none