Skip to content
doubtly
Sign up

1 answer

Log in to upvote 0 Log in to downvote

Best answer

Answer: 4. BF\(_3\)

Key idea: A Lewis acid accepts an electron pair.

\(\mathrm{BF_3}\) has an incomplete octet on boron (6 electrons) and an empty p orbital, so it accepts a pair. \(\mathrm{OH^-}\), \(\mathrm{NH_3}\) and \(\mathrm{H_2O}\) all have lone pairs and act as Lewis bases. Option 4.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
Was this answer helpful?
Sign in to comment

Your answer

Log in or create a free account to answer this question.