Stearic Repulsions |3 centred 2 electron Bond

Steric Repulsion | Multi Centered Bonds | 3 centered 2 electron Bond

Which of the following has a 3 centred 2 electron bond?

Which of the following statements are correct regarding diborane? I. Two bridged hydrogen atoms and two boron atoms in one plane. II. Out of six B-H bond, two bonnds can be described in terms of 3 centre-2 electron bonds. III. Out of six B-H bonds, four B-H bonds can be described in terms of 3 centre-2 electron bonds. IV. Four terminal B-H bonds are two centre electrons regular bonds.

The number of 2-centre-2-electron and 3-centre-2-electron bonds in B_(2)H_(6) , respectively, are