MCQ
Halides of $\ce{III A}$ group elements predominantly act as :
- ALewis bases
- ✓Lewis acids
- CArrhenius acids
- DNeutral halides
✓
Answer
Correct option: B.
Lewis acids
In a trivalent state, the number of electrons around the central atom in a molecule of the compounds of these elements will be only six. Such electron deficient molecules have a tendency to accept a pair of electrons to achieve octet and thus behave as Lewis acids.
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