Answer to Question #261837 in Inorganic Chemistry for River

Question

A typical 11B – 1H bond has a stretching frequency of 2400 cm-1. Based on your understanding of isotopic effects on vibrational frequencies, and their connection to bond strength, rank the B – H bonds from weakest to strongest. Consider the most common isotopes of the B – H bonds highlighted below. 

Make sure to explain your ranking.

 10B – 1H,  10B – 2H,  11B – 1H,  11B – H 

Answer 1

11B – 1H, 10B – 2H, 11B – H, 10B – 1H