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The p-Block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe p-Block Elements1 Mark
MCQ
Boron compounds behave as Lewis acids because of their :
  • A
    Acidic nature.
  • B
    Covalent nature.
  • C
    Ionic nature.
  • ✓
    Vacant orbital.
✓

Answer

Correct option: D.
Vacant orbital.
A Lewis acid is an electron pair acceptor, while Lewis base is an electron pair donor.
Boron compounds behave as Lewis acids because of their vacant orbital. Its octet is incomplete, in which boron can accept an electron pair.

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