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Explain the structure of boric acid....

Explain the structure of boric acid.

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In boric acid boron in `sp^2` hybridisation forming planar borate units . Between the planar borate units the hydrogen atoms of the one OH group of boric acid form hydrogen bond with oxygen atom of another OH group of another boric acid unit. Thus several boric acid molecules associate through hydrogen bonds forming a layered lattice structure.

The dotted lines represent hydrogen bonds.
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VGS PUBLICATION-BRILLIANT-THE P-BLOCK ELEMENTS - GROUP 13 -SHORT ANSWER QUESTIONS
  1. Suggest reasons why the B-F bonds lengths in BF3 (130 pm) and BF4^- ...

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  2. B-Cl bond has a bond moment. Explain why BCl3 molecule has zero dipole...

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  3. Explain the structure of boric acid.

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  4. What happens when Borax is heated strongly ?

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  5. What happens when Boric acid is added to water ?

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  6. What happens when Aluminium is heated with dilute NaOH ?

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  7. What happens when BF3 is treated with ammonia ?

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  8. What happens when Hydrated alumina is treated with aq.NaOH solution ?

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  9. Give reasons Conc. HNO3 can be transported in aluminium container.

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  10. Give reasons A mixture of dil. NaOH and aluminium pieces in used to...

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  11. Give reasons Aluminium alloys are used to make aircraft body

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  12. Give reasons Aluminium utensils should not be kept in water overnigh...

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  13. Give reasons Aluminium wire is used to make transmission cables .

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  14. Explain why the electronegativity of Ga, In and Tl will not vary very ...

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  15. Explain borax bead test with a suitable example

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  16. Explain the structure of diborane.

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  17. Explain the reactions of aluminium with acids.

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  18. Write a short note on the anomalous behaviour of boron in the group - ...

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  19. Aluminium reacts with dil. HNO3 but not with conc. HNO3-explain.

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  20. Give two methods of preparation of diborane.

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