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Consider the compounds, BCl3 and C Cl4. ...

Consider the compounds, `BCl_3 and C Cl_4`. How will they behave with water? Justify.

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`BCl_3` is an electron deficient molecule as the central B-atom has only six electrons in the valence shell. Therefore, it can accept a pair of electrons donated by water and undergoes hydrolysis to form boric acid `(H_3BO_3)` and HCI.

On the other hand, C-atom in `C Cl_4` has 8 electrons in its valance shell and it has no vacant d -orbitals to extend its octet. So it cannot accept a pair of electrons from `H_2O` and hence `C Cl_4` does not undergo hydrolysis.
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CHHAYA PUBLICATION-SOME p-BLOCK ELEMENTS-SOLVED NCERT EXERCISE
  1. How can you explain higher stability of BCl3 as compared to TlCl3 ?

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

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

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  4. Is boric acid a protic acid? Explain.

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  5. Explain what happens when boric acid is heated.

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

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  7. Write reactions to justify amphoteric nature of Al.

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

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

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

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

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

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

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

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

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

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

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

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

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  20. Suggest a reason as to why CO is poisonous.

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