Total number of 2c-2e and 3c-2e bonds in `Be(BH_(4))_(2)` are respectively"

Number of 3c-2e bonds (hydrogen bridges) in Be(BH_(4))_(2) is

Number of t 3c - 2e bonds (hydrogen bridges) in Be(BeH_(4))_(2) is

In the strucute 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

The molecule is not having 3c-2e bond is :

How many 3c-2e bonds are present in diborane ?

Consider the structure of Al_(2)Me_(6) compound and find the value of (x-y)/(z) where x= maximum number of atoms that can lie in place having terminal (Al-Me) bonds y= total number of 3c-2e^(-) bonds z= total number of atoms that are sp^(3) hydrized.