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How are boron trihalides prepared ?...

How are boron trihalides prepared ?

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Statement: Acidic nature of boron trihalides is in the order BF_(3)ltBCI_(3)ltBBr_(3)ltBI_(3) . Explanation: Basic nature of nitrogen trihalides is in the order NF_(3)gtNCI_(3)gtNBr_(3)gtNI_(3) .

PRADEEP-SOME p-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS) I. Group 13 Elements
  1. Discuss the acid-base behaviour of oxides and hydroxides of group 1...

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  2. What happens when aluminium reacts with : (i) NaOH and (ii) Conc. H...

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  3. How are boron trihalides prepared ?

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  4. Discuss the structure of boron trihalides.

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  5. Why do boron trihalides behave as Lewis acids ? Discuss their relati...

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  6. Describe the shapes of BF(3) and BH(4)^(ө). Assign the hybridisation o...

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  7. Explain the following giving reason : (i) BF(3) acts as a Lewis acid...

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  8. Arrange the boron trihalides in order of increasing Lewis acid chara...

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  9. Comment upon icosahedral structure of boron.

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  10. Why does boron differ from rest of the elements of group ? Give at l...

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  11. Discuss briefly the action of heat or borax.

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  12. Discuss the structure of [B(4)O(5)(OH)(4)]^(2-).

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  13. Explain the chemistry of borox bead test.

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  14. How is boric acid prepared from borax ? Briefly discuss its acidic...

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  15. Discuss the action of heat on boric acid .

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  16. How is borate ion detected in qualitative analysis ?

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  17. Comment upon the structure of boric acid .

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  18. How is diborane prepared in the laboratory ? Discuss its structure.

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  19. How is inorganic benzene prepared ? Why is it called so ?

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  20. Complete and balance the following chemical equations. (i) BF(3) + (...

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