24Cr
Chromium
Transition MetalChromium (Cr) is element 24, a transition metal, in period 4 and group 6 of the periodic table. Its standard atomic weight is 51.996, it melts at 1907 °C and boils at 2671 °C. Discovered by Louis Nicolas Vauquelin, 1797.
Atomic Number24
SymbolCr
NameChromium
Atomic Weight51.996 u
CategoryTransition Metal
Period4
Group6
Melting Point1907 °C
Boiling Point2671 °C
Density7.15 g/cm³
Electron Config[Ar] 3d5 4s1
Discovered ByLouis Nicolas Vauquelin, 1797