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Cr
Chromium
Z
24
51.996 g/mol
Transition Metal
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Overview
Atomic Properties
Thermodynamics
Electromagnetism
Isotopes
Group
6
Period
4
Block
d
Occurrence
Primordial
Native
Biological Role
Micronutrient
History
1794 (discovery)
Louis-Nicolas Vauquelin
1797 (isolation)
Louis-Nicolas Vauquelin
Named By
Louis-Nicolas Vauquelin
Latin Name
Chromium
Abundance
Universe
0.0015%
15 ppm
x
Sun
0.002%
20 ppm
x
Meteorites
0.31%
3,100 ppm
x
Earth's crust
0.0102%
102 ppm
x
Oceans
< 0.0001%
0.001 ppm
x
Humans
< 0.0001%
0.03 ppm
x
23
V
25
Mn
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