Why are Ionic Hydrides more denser?

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SUMMARY

Ionic hydrides exhibit greater density than their corresponding metals due to the formation of low-radius ions from Group I and II metals. These metals, when forming ionic compounds, lose their valence electrons, resulting in smaller ionic radii. Additionally, the inclusion of H- ions, which also possess a low radius, contributes to the overall density of ionic hydrides. This phenomenon contrasts with interstitial hydrides, which have lower densities due to the expansion of the crystal lattice from hydrogen inclusion.

PREREQUISITES
  • Understanding of ionic bonding and ionic compounds
  • Knowledge of metallic radii and atomic structure
  • Familiarity with Group I and II metals in the periodic table
  • Basic concepts of crystal lattice structures
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  • Research the properties of ionic hydrides and their formation mechanisms
  • Study the differences between ionic and interstitial hydrides
  • Explore the relationship between ionic radius and density in various compounds
  • Investigate the role of hydrogen ions in ionic compounds
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Chemists, materials scientists, and students studying inorganic chemistry will benefit from this discussion, particularly those interested in the properties and behaviors of ionic hydrides.

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Why do ionic hydrides have more density than the corresponding metals?
I know that interstitial hydrides have lower density than the corresponding metals from which they were formed as the crystal lattice expands due to inclusion of H2. What makes ionic hydrides more denser then?
 
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Abdul Quadeer said:
Why do ionic hydrides have more density than the corresponding metals?
I know that interstitial hydrides have lower density than the corresponding metals from which they were formed as the crystal lattice expands due to inclusion of H2. What makes ionic hydrides more denser then?
It depends on which metals. Ionic hydrides are formed with metals of the I or II group, usually, and these metals have a low density because of their great metallic radius (at similar atomic weight), compared with other metals. In a ionic compound, these metals leave their valence electrons becaming low radius ions. Added with the fact that H- ion has a low radius too...
 
Thanks lightarrow!
 

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