Question

BF3 and NH3 undergo a Lewis acid-base reaction forming an adduct. Which picture below correctly represents the curved arrow notation for the initial Lewis acid-Lewis base interaction in this reaction; what is the Lewis acid and the Lewis base?

A) Picture (1) is correct; NH3 is the Lewis acid and BF3 is the Lewis base.
B) Picture (2) is correct; BF3 is the Lewis acid and NH3 is the Lewis base.
C) Picture (3) is correct; NH3 is the Lewis acid and BF3 is the Lewis base.
D) Picture (4) is correct; BF3 is the Lewis acid and NH3 is the Lewis base.

Answer

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