Formula: LiH Hill system formula: H1Li1 CAS registry number: <7580-67-8> Formula weight: 7.949 Class: hydride Colour: white to grey Appearance: crystalline solid Melting point: 689°C Boiling point: Density: 780 kg m-3

The oxidation number of lithium in lithium hydride is 1.

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Lithium metal reacts directly with hydrogen gas to form the hydride lithium(I) hydride, LiH.

2Li(s) + H2(g) → 2LiH(s)

Solid state structure

Geometry of lithium: 6 coordinate: octahedralPrototypical structure: NaCl (rock salt)


Element analysis

The table shows element percentages for LiH (lithium hydride).

Element %
H 12.68
Li 87.32

Isotope pattern for LiH

The chart below shows the calculated isotope pattern for the formula LiH 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.

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R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.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.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.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.

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You can reference the periodic table as follows:",, accessed September 2021."