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ChemistryComplete Pblock-p-Block 13,14Medium2 minQB

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Trihalide of boron family act as lewis acid. What is the order of lewis acidic strength?

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Solution:

The Lewis acidic strength of trihalides of boron family elements decreases down the group. This is because as the size of the central atom increases (from B to Al to Ga), the ability to accept electrons decreases due to increased shielding and larger atomic orbitals, making the electron deficiency less pronounced. Therefore, the order is $BC l_{3} > A lC l_{3} > G a C l_{3}$ .

Stream:JEESubject:ChemistryTopic:Complete Pblock-Subtopic:p-Block 13,14

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