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V PUBLICATION-THE p - BLOCK ELEMENTS-QUESTION BANK
- Carbon has śeveral allotropic forms. b. Prepare a short note on fulle...
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- Why does not silicon form an analogue of graphite? OR Why does element...
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- Why carbon forms covalent compounds whereas lead forms ionic compounds...
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- Carbon exhibits catenation, whereas silicon does not. Explain.
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- SiCl4 forms [SiCl6]^(2-) while C Cl4 does not form [C Cl6]^(2-) Explai...
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- when 'CCl4' is mixed with 'H2 O', they become immiscible. Explain.
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- The substance which can accept electrons is a Lewis acid. 'BCl3, BF3' ...
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- CO2 is a gas but SiO2 is a solid. Give reason.
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- Briefly describe the structure of diborane.
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- Starting from borax how will you prepare boric acid? (Write the chemic...
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- Boron, Aluminium, Gallium, Indium and Thallium belong to group 13 of t...
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- Diborane is an important hydride of Boron a. During a class room disc...
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- What is dry ice?
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- Say TRUE or FALSE. Boron in aqueous solution forms B^(3+) ion.
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- How does sodium hydride react with diborảne?
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- What is the maximum covalency of silicon in its compounds?
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- Account for the following. (i) P b X2 is more stable than P b X4(X=C...
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- C O2' can be represented by the structure 'O=C=O' comment.
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- Diamond is hard and non conducting while graphite is soft and conducti...
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- Give reason for (i) diamond is a covalent compound yet its melting p...
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