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What are silicones and what are their im...

What are silicones and what are their important properties?

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ICSE-SOME P-BLOCK ELEMENTS -SHORT ANSWER TYPE QUESTIONS
  1. Why is boron trifluoride a weaker Lewis acid as compared to B Br3 and ...

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  2. Discuss the structure of aluminium chloride.

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  3. Inspite of being electron deficient, boron halides do not exist as dim...

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  4. What type of oxides are formed by group 13 elements and how does their...

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  5. Why does boron differ from other elements of its own group in several ...

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  6. Boron does not form [BF6]^(3-), whereas aluminium forms [AlF6]^(3-). E...

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  7. Mention any four properties which show that boron shows diagonal relat...

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  8. Why are the melting and boiling points of C and Si much higher as comp...

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  9. The ionisation energy decreases on moving down the group 14. Explain

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  10. The first ionisation energy of carbon is much higher than that of sili...

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  11. Why is the ionisation energy of lead slightly higher than that of tin?

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  12. The electronegativity remains almost constant in going from Si to Pb. ...

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  13. Explain the difference in properties of diamond and graphite on the ba...

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  14. What do you understand by catenation ? How does the property vary in g...

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  15. What are the common oxidation states exhibited by the elements of grou...

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  16. Why does lead prefer to exist in +2 oxidation state instead of +4 alth...

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  17. The tetrahalides of carbon do not form complexes, whereas the tetrahal...

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  18. Explain giving reasons the following: C Cl4 is not hydrolysed with ...

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  19. Explain, why CO2 is a gas but SiO2 is a solid.

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  20. What are silicones and what are their important properties?

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