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Classifiy the following into inoic, mole...

Classifiy the following into inoic, molecular, covalent and metallic crystals:
`SiO_(2)` (quartz), brass bronze, dry ice, nitre diamond, `H_(2) O` (ice), `SO_(2), I_(2) CaO`

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Ionic = Nitric, `CaO`
Molecular `= SO_(2)` (polar), `I_(2)` (non-polar), `H_(2)O` (H-bonded)
Covalent = Dry ice `(CO_(2))`, `SiO_(2)`, Diamond
Metallic = Brass, bronze
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CENGAGE CHEMISTRY-NCERT BASED EXERCISE-Short Answer Type Questions
  1. Why amorphous solids are called as supercooled liquids?

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  2. Why benzoic acid has a sharp melting point but glass does not?

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  3. Classifiy the following into inoic, molecular, covalent and metallic c...

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  4. A CsCl crystal is found to have NaCl structure. How it happened?

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  5. A NaCl crystal is found to have CsCl structure. How it happened?

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  6. What is the coortination number of TVs and OV s

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  7. What ist the coordination number of each ion present in the closed pac...

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  8. What is the coordination number of hcp and ccp?

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  9. How the sturctue of amorphous silica (quartz glass) differ from quartz...

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  10. Do all metals posses a closest packed structure?

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  11. Why do some substance exist as solids?

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

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

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  14. How many types of centred unit cells exist?

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

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

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

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  18. What is the distance between two TVs?

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

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

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