Cr
Chromium
Z 24 51.996 g/molTransition Metal
Group
6
Period
4
Block
d
Occurrence
Exploding white dwarfs 76%Exploding massive stars 24%Geochemical class: Lithophile
Biological Role
Humans: Beneficial
History
1797 (discovery)
Louis-Nicolas Vauquelin
1798 (isolation)
Louis-Nicolas Vauquelin
Named By
Louis-Nicolas Vauquelin
Latin Name
Chromium
Abundance
Solar System0.001796%17.955 ppm
x
Sun0.001603%16.03 ppm
x
Meteorites0.2616%2,616 ppm
x
Earth's crust0.0135%135 ppm
x
Oceans< 0.0001%0.0003 ppm
x
Humans< 0.0001%0.024 ppm
x