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What are metallic hydrides? Explain about it.

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  • Metallic hydrides are obtained by hydrogenation of metals and alloys in which hydrogen occupies the interstitial sites (voids). Hence, they are called interstitial hydrides.
  • The hydrides show properties similar to parent metals and hence they are also known as metallic hydrides.
  • They arc mostly non-stoichiometric with variable composition (TiH1.5-1.8 18 and PdH0.6-0.8).
  • Some are relatively light, inexpensive and thermally unstable which makes them useful for hydrogen storage applications. 

Example, TiH2 , ZrH2 , ZnH2 .

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