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The densities of ionic hydrides are grea...

The densities of ionic hydrides are greater than that of the metal from which they are formed- why ?

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This is because hydride ions `(H^(-))` occupy the holes in the lattice of the metal without distorting the metal lattice.
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CHHAYA PUBLICATION-HYDROGEN-QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. Which isotope of hydrogen is used in nuclear reactors?

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  2. Why are ionic hydrides used as solid fuels?

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  3. The densities of ionic hydrides are greater than that of the metal fro...

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  4. Give examples of two interstitial hydrides.

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  5. Which gaseous compound on treatment with dihydrogen produces methanol?

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  6. Give the chemical reaction that occurs when hydrogen is used as a rock...

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  7. A sample of water containing KCL does not behave as hard water, but a ...

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  8. What is EDTA, a compound used to determine the hardness of water?

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  9. Can distilled water be called deionised water?

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  10. What is the difference between the water softened by the permutit proc...

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  11. What will be the hardness of a sample of water, 10^(6) g of which cont...

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  12. What is calgon?

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  13. Give the chemical formula of permutit.

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  14. What is the main source of heavy water?

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  15. Can sea animals survive in distilled water?

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  16. Although D(2)O resembles H(2)O chemically, yet it is a toxic substance...

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  17. Which compound is used to colour hair golden?

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  18. What is the trade name of hydrogen peroxide used as an antiseptic?

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  19. What is the strength in normality of a '11.2 volume' H(2)O(2) solutio...

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  20. Name a compound which suppresses the decomposition of H(2)O(2)

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