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Why does boron triflouride behave as a L...

Why does boron triflouride behave as a Lewis acid?

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The B-atom in `BF_3` molecule has only six electrons in its valence shell and thus two more electrons are required to complete its octet. Therefore, `BF_3` can easily accept a pair of electrons from basic substances such as, `NH_3, (C_2H_5)_2O` etc. and thus behaves as a Lewis acid.
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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SOLVED NCERT EXERCISE
  1. Discuss the pattern of variation in the oxidation states of C to Pb.

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  2. How can you explain higher stability of BCl3 as compared to TlCl3 ?

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  3. Why does boron triflouride behave as a Lewis acid?

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  4. Consider the compounds, BCl3 and C Cl4. How will they behave with wate...

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  5. Is boric acid a protic acid? Explain.

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  6. Explain what happens when boric acid is heated.

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  7. Describe the shapes of BF3 and BH4^(-) . Assign the hybridisation of b...

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  8. Write reactions to justify amphoteric nature of Al.

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  9. What are electron deficient compounds? Are BCl3 and SiCl4 electron de...

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  10. Write the resonance structures of CO3^(2-) and HCO3^(-).

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  11. What is the state of hybridisation of carbon in CO3^(2-) ?

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  12. What is the state of hybridisation of carbon in diamond ?

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  13. What is the state of hybridisation of carbon in graphite?

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

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  15. Rationalise the statement and give reaction : Lead (II) chloride rea...

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  16. Rationalise the statement and give reaction : Lead (IV) chloride is ...

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  17. Rationalise the statement and give reaction : Lead is known not to f...

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  18. Suggest reasons why the B-F bond lengths in BF3 (130 pm) and BF4^(-) (...

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  19. If B-Cl bond has a dipole moment, explain why BCl3 molecule has zero d...

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  20. Aluminium trifluoride is insoluble in anhydrous HF but dissolves on a...

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