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How does boron occur ?...

How does boron occur ?

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PRADEEP-SOME p-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS) I. Group 13 Elements
  1. To which block of the periodic table group 13 belongs.What is the gene...

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  2. Explain maximum covalency of boron and aluminium.

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  3. How does boron occur ?

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  4. Name the elements of group 13 in the increasing order of their atomic ...

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  5. What is inert pair effect ? Discuss the oxidation states of Group 13...

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  6. Boron is trivalent. Explain.

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  7. Give the structure of anhydrous aluminium chloride and boron triflu...

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  8. Boron forms no compound in unipositive state while thallium in unipo...

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  9. Why boron forms electron deficient compounds?

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  10. Write balanced equations for the reaction of elemental boron with o...

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  11. Discuss the acid-base behaviour of oxides and hydroxides of group 1...

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

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  13. How are boron trihalides prepared ?

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  14. Discuss the structure of boron trihalides.

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

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

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

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

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  19. Comment upon icosahedral structure of boron.

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

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