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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure1 Mark
Question
Why does BF3 behave as Lewis acid?
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Answer

In BF3 there are six electrons around Boron after sharing with fluorine atoms and hence Boron is electron deficient. B in BF3 can accept lone pair of electrons in the vacant 2p orbital of Boron and so behaves as Lewis acid as its octet is not complete.

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