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Arrange BF3, BCl3, B Br3, BI3 in the dec...

Arrange `BF_3, BCl_3, B Br_3, BI_3` in the decreasing order of Lewis acid character and explain.

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ICSE-SOME P-BLOCK ELEMENTS -SHORT ANSWER TYPE QUESTIONS
  1. In the structure of diborane,

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  2. Why do boron halides act as Lewis acids ?

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  3. Arrange BF3, BCl3, B Br3, BI3 in the decreasing order of Lewis acid ch...

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  4. Why is boron trifluoride a weaker Lewis acid as compared to B Br3 and ...

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  5. Discuss the structure of aluminium chloride.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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