P-Block Elements Ques 211

Question: Among the halides

(I) $ BCl_3 $
(II) $ AlCl_3 $ (III) $ GaCl_3 $
(IV) $ InCl_3 $ The order of decreasing Lewis acid character is:

Options:

A) I, II, III, IV

B) II, III, IV, I

C) III, IV, II, I

D) IV, III, II, I

Show Answer

Answer:

Correct Answer: D

Solution:

The acidic character of chlorides increases down the group $ BCl_3 $ is weak acid to show $ p\pi -p\pi $ back bonding.



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