- Formula: H2O
- Hill system formula: H2O1
- CAS registry number: [7732-18-5]
- Formula weight: 18.015
- Class: oxide
- Colour: colourless
- Appearance: liquid
- Melting point: 0.00°C
- Boiling point: 100.00°C
- Density: 1000 kg m-3 at 4°C; 997 kg m-3 at 25°C
The following are some synonyms of water:
- hydrogen(I) oxide
- dihydrogen monoxide
- dihydrogen oxide
The oxidation number of hydrogen in water is 1.
Solid state structure
- Geometry of hydrogen: 1 coordinate: terminus
- Prototypical structure:
The table shows element percentages for H2O (water).
Isotope pattern for H2O
The chart below shows the calculated isotope pattern for the formula H2O with the most intense ion set to 100%.
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.