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Ba
Barium
Z
56
137.327 g/mol
Alkaline Earth Metal
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Overview
Atomic Properties
Thermodynamics
Electromagnetism
Isotopes
Group
2
Period
6
Block
s
Occurrence
Primordial
Biological Role
---
History
1772 (discovery)
Carl Wilhelm Scheele
1808 (isolation)
Humphry Davy
Named By
Humphry Davy
Latin Name
Barium (elementum)
Abundance
Universe
< 0.0001%
0.1 ppm
x
Sun
< 0.0001%
0.1 ppm
x
Meteorites
0.00028%
2.8 ppm
x
Earth's crust
0.0425%
425 ppm
x
Oceans
< 0.0001%
0.03 ppm
x
Humans
< 0.0001%
0.3 ppm
x
55
Cs
57
La
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