In the structure of B 2 H 6 , the number of BH 2 groups present in one plane, and the number of B - H bonds, B - B bonds, B - H - B bridge bonds are respectively

Step-by-step solution

The structure of B 2 H 6 contain four hydrogen connected to B atoms by covalent bonds. So there are four 2 centred- 2 electron bonds. Two hydrogen atoms are connected by bridge and it is connected to 2 boron atoms. So, there are two 3 -centred- 2 - electron bonds. ( H - B ) → 2 C - 2 e   bonds ( B - H - B ) → 3 C - 2 e   bonds