Q. Which of the following molecular hydrides acts as a Lewis acid?
A) CH₄
B) NH₃
C) H₂O
D) B₂H₆
Explanation
[Solution from source] B₂H₆ is electron-deficient (each B has an incomplete octet) and accepts electron pairs, so it acts as a Lewis acid. CH₄ is electron-precise, while NH₃ and H₂O have lone pairs and act as Lewis bases. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.