Barium compounds: barium oxide
The barium in barium oxide formally is in the oxidation state 2.
- Formula as often written: BaO
- Hill system formula: Ba1O1
- CAS registry number: [1304-28-5]
- Formula weight: 153.326
- Class: oxide
- barium oxide
- barium(II) oxide
- Colour: white to very pale yellow
- Appearance: crystalline solid
- Melting point: 1973°C; 1913°C
- Boiling point: 2000°C
- Density: 5720 kg m-3
Element percentages for the elements in barium oxide
Barium oxide is made by the thermolysis of salts such as barium carbonate
BaCO3 (heat) → BaO(s) + CO2(g)
Solid state structure
- Geometry of barium: 6 coordinate: octahedral
- Prototypical structure: NaCl (rock salt)
What follows is the calculated isotope pattern for the BaO unit with the most intense ion set to 100%.
150 3.4 __
151 9.2 _____
152 11.0 ______
153 15.7 ________
154 100.0 __________________________________________________
The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.
- R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
- N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
- F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
- A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
- R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
- A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
- A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
- J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
- D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
- J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
- J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.