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प्रश्न
Why interstitial hydrides have a lower density than the parent metal?
उत्तर
- d block elements form metallic or interstitial hydrides, on heating with dihydrogen under pressure.
- Hydrogen atoms being small in size occupy some in the metallic lattice producing distortion without any change in its type.
- The densities of these hydrides are lower than those of metals from which they are formed since the crystal lattice expands due to the inclusion of dihydrogen.
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