Difference between revisions of "Barium"

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Latest revision as of 14:21, 14 November 2008

Barium
Ba
In situ availability:
Necessity:
Atomic number: 56
Atomic mass: 137.327
group: 2
period: 6
normal phase: Solid
series: Alkaline earth metals
density: 3.51 g/cm3
melting point: 1000K,
727°C,
1341°F
boiling point: 2170K,
1897°C,
3447°F
RbSrY
Cs ← Ba → La
FrRaAc
Atomic radius (pm): 215
Bohr radius (pm): 253
Covalent radius (pm): 198
Van der Waals radius (pm):
ionic radius (pm): (+2) 142
1st ion potential (eV): 5.21
Electron Configuration
1s2
2s2 2p6
3s2 3p6 3d10
4s2 4p6 4d10
5s2 5p6
6s2
Electrons Per Shell
2, 8, 18, 18, 8, 2
Electronegativity: 0.89
Electron Affinity: 0.15
Oxidation states: 2
Magnetism: Paramagnetic
Crystal structure: Body centered cubic

Barium is a Alkaline earth metal in group 2. It has a Body centered cubic crystalline structure. This element has 7 stable isotopes: 130, 132, 134, 135, 136, 137, and 138.




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