Home 56 Ba Barium back to the periodic table

 
Atomic number   56
Symbol   Ba
Atomic weight   137.327
Density [g/cm3]   3.65
Melting point [°C]   725
Boiling point [°C]   1640
1st Ionization energy [eV]   5.212
Electronic configuration   [Xe] 6s2
Oxidation number (most stable)   2
Atomic radius [pm]   217.3
Ionic radius [pm]   136 (2+)
Abundance in crustal rocks [ppm]   390
Origin of the name   (greek) barys = heavy
Discovery   1808 by Humphry Davy
Uses   only the compounds are of technical importance such as barium carbonate and barium sulfate.

This page in German - Diese Seite in Deutsch
© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
These recommendations are believed to be correct. However, no guarantee of their accuracy is given. Therefore, purchasers shall make their own tests to determine suitability for their use. These products are offered for industrial and related uses (e.g. research and development) only. However the user must take the necessary precautions appropriate for products containing chemicals. This description does not imply the absence of any patents, the responsibility whatsoever solely rests with the user.