Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Boranes Carboranes · Exam: NET DEC 2013 · Marks: 2 · Difficulty: Medium
For higher boranes 3c-2e 'BBB' bond may be a part of their structures. In $\mathrm{B}_{5} \mathrm{H}_{9}$, the number of such electron deficient bond(s) present is/are