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The Lewis acid strength of BBr3, BCl3 and BF3 is in the order

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The Lewis acid strength of BBr3, BCl3 and BF3 is in the order

(A)   BBr3<BCl3<BF3 

(B)  BCl3<BF3<BBr3 

(C)   BF3<BCl3<BBr3 

(D)   BBr3<BF3<BCl3

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1 Answer

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Best answer

Correct option  (C) BF3 < BCl3 < BBr3

Explanation:

Lewis acid strength of BBr3, BCl3 and BF3 is in the order of 

BF3 < BCl3 < BBr3

Due to back bonding

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