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Which of the following are Lewis acids?...

Which of the following are Lewis acids?

A

`PH_(3) and BCl_(3)`

B

`AlCl_(3) and SiCl_(4)`

C

`PH_(3) and SiCl_(4)`

D

`BCl_(3) and AlCl_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B, D
`BCl_(3) and AlCl_(3)`, both have vacant p-orbital and incomplete octet thus they behave as Lewis acids. `SiCl_(4)`, can accept lone pair of electron in d-orbital of silicon hence it can act as Lewis acid.
Although the most suitable answer is (d). However, both options (b) and (d) can be considered as correct answers.
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DISHA PUBLICATION-The p-Block Elements (Group 13 and Group 14)-Exercise-2: Concept Applicator
  1. Which of the following are Lewis acids?

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  2. Aqueous solution of orthoboric acid can be titrated against sodium hyd...

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  3. Which of the following statements about anhydrous aluminium chloride i...

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  4. Which of the following statements about H(3)BO(3) is not correct ?

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  5. Which one of the following is correct statement ?

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  6. The main factor responsible for waek acidic nature of B-F bonds in BF(...

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  7. An aqueous solution of FeSO(4),Al(2)(SO(4))(3) and chrome alum is heat...

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  8. Which reaction cannot give anhydrous AlCl(3):

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  9. Which of the following is true ?

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  10. The stability of +1 oxidation state increases in the sequence :

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  11. Boron does not form B^(3+) ions because

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  12. The number of isomers possible for disubstituted borazine, B(3)N(3)H(4...

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  13. How can the following reaction be made to proceed in forward direction...

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  14. When excess of NaOH solution is added in potash alum the product is.

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  15. The structure of boron nitride resembles that of

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  16. To a piece of charcoal, sulphuric acid is added. Then:

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  17. Carbon and silicon belong to group IV. The maximum coordination number...

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  18. Soldiers of Napolean army while at alps during freezing winter suffere...

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  19. Which one of the following allotropic forms of carbon is isomorphous w...

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  20. The structure and hybridization of Si(CH(3))(4) is

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  21. A solid element (symbol Y) conducts electricity and forms two chloride...

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