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Why does boron trifluoride behave as a L...

Why does boron trifluoride behave as a Lewis acid?

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`BF_(3)` behaves as a Lewis acid because central boron atom has only six electorns (three pairs) after sharing with the electrons of the F atoms. It is an electron deficient compound and, therefore, behaves as a Lewis acid. For more details, consult section 11.2.
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