Chemistry · PYQ NEET UG 2023

Amongst the given options which of the following molecules / ion acts as a Lewis acid?

1. A
   \( \text{BF}_3 \)
2. B
   \( \text{H}_2\text{O} \)
3. C
   \( \text{NH}_3 \)
4. D
   \( \text{OH}^- \)