Question

The structure of diborane contains:

• A. four 2C – 2e bonds and two 3C – 2e bonds
• B. two 2C – 2e bonds and four 3C – 2e bonds
• C. two 2C – 2e bonds and two 3C – 2e bonds
• D. four 2C – 2e bonds and four 3C – 2e bonds

Answer 1

The correct option is A

four 2C – 2e bonds and two 3C – 2e bonds

$B_2{H}_6$ 4 B-H bonds with terminal hydrogen that are 2 centered 2 electron bonds. The remaining remaining two hydrogen are bridged hydrogen that are formed by using three nucleus held by two electrons.