LiH

from The Collaborative International Dictionary of English v.0.48
Hydride \Hy"dride\, n. [Hydr- + ide.] (Chem.)
   A compound of the binary type, in which hydrogen is united
   with some other element.

   {lith"i*um hy"dride}, n. (Chem.) A hydride of lithium, {LiH},
      commonly used as a powerful reducing agent in organic
      chemistry.
      [PJC]
    

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