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Why do some substance exist as solids?...

Why do some substance exist as solids?

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When the constituent particles of a substance are so closely packed that the intermolecular forces of attarction are much stronger than the thermal energy, the substance exists as solid.
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CENGAGE CHEMISTRY-NCERT BASED EXERCISE-Short Answer Type Questions
  1. How the sturctue of amorphous silica (quartz glass) differ from quartz...

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  2. Do all metals posses a closest packed structure?

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  3. Why do some substance exist as solids?

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  4. Why do the window glass of old old building (a) look milky and (b) bec...

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  5. Why the melting points of NaF and MgO (990^(@)C and 2640^(@)C) are so ...

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  6. How many types of centred unit cells exist?

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  7. How many types of two-dimensional lattice exist? Why pentagonal lattic...

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  8. How many TVs and OV s occur per unit cell and per atom in a closest pa...

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  9. Where the TVs and OV s are located in a closet packed structure?

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  10. What is the distance between two TVs?

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  11. In an hcp structure, calculate a. Z("eff) Base area of hexagon c...

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  12. In a diamond cubic (dc) structure, calculate (a) Z("eff")(b) CN radi...

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  13. What is the ratio of (TV//OV)("occupied") in spinel an inverse spinel...

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  14. What is the CN of cation and anion in a corundum structure?

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  15. What is the occurrence of different forms of the same compound called?

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  16. How many types of allotropy exist?

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  17. How can a substance be made amorphous?

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  18. Why does ZnO show increased electrical conductivity and turns yellow o...

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  19. Why NiO and FeO are nonstroichiometric with the formula Ni(0.98)O and ...

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  20. Why the defectsof the crystalline solids are called thermodynamic defe...

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