11th Class Chemistry The p-Block Elements-I

  • question_answer 11) Why does boron trifluoride behave as a Lewis acid?

    Answer:

    B atom forms three covalent bonds with three fluorine atoms. Thus, it has only six electrons after forming \[B{{F}_{3}}\]in valence shell. Therefore, it is an electron deficient compound and still needs two more electrons to complete its octet. Therefore, it acts as a Lewis acid as it easily accepts a pair of electrons from Lewis bases.


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