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Why does elemental silicon not form a gr...

Why does elemental silicon not form a graphite - like structure, whereas carbon does?

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V PUBLICATION-THE p - BLOCK ELEMENTS-QUESTION BANK
  1. What is the biological importance of H2 CO3 / HCO3^- equilibriu...

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  2. Give reasons: a. Silicon form compounds with coordination number of ...

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  3. Why does elemental silicon not form a graphite - like structure, where...

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  4. Silianes get easily hydrolysed whereas alkanes do not. Give reasons.

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  5. Diborane is an important hydride of Boron a. During a class room disc...

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  6. Carbon has śeveral allotropic forms. b. Prepare a short note on fulle...

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  7. Why does not silicon form an analogue of graphite? OR Why does element...

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  8. Why carbon forms covalent compounds whereas lead forms ionic compounds...

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  9. Carbon exhibits catenation, whereas silicon does not. Explain.

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  10. SiCl4 forms [SiCl6]^(2-) while C Cl4 does not form [C Cl6]^(2-) Explai...

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  11. when 'CCl4' is mixed with 'H2 O', they become immiscible. Explain.

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  12. The substance which can accept electrons is a Lewis acid. 'BCl3, BF3' ...

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  13. CO2 is a gas but SiO2 is a solid. Give reason.

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  14. Briefly describe the structure of diborane.

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  15. Starting from borax how will you prepare boric acid? (Write the chemic...

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  16. Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of t...

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  17. Diborane is an important hydride of Boron a. During a class room disc...

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  18. What is dry ice?

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  19. Say TRUE or FALSE. Boron in aqueous solution forms B^(3+) ion.

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  20. How does sodium hydride react with diborảne?

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