Questions
The tendency of BF3, BCl3 and BBr3 to behave as Lewis acid decreases in the sequence:
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a
BCI3 < BF3 < BBr3
b
BBr3 > BCI3 > BF3
c
BBr3 < BF3 < BCI3
d
BF3 > BCI3 >BBr3
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Correct option is B
The effect of increase of pπ‐pπ back bonding from BBr3 to BF3, hence decreases the Lewis acidic character from BBr3 to BCl3 to BF3.Similar Questions
The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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