Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Which of the following are Lewis acids?
A
and 
B
and 
C
and 
D
and 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(c, d) 
and 
, both have vacant 
-orbital and incomplete octet, thus they behave as Lewis acids.
can accept lone pair of electron in 
-orbital of silicon, hence it can act as Lewis acid.
Although the most suitable answer is . However, both options and can be considered as correct answers.
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