question_answer

The two types of bonds present in \[{{B}_{2}}{{H}_{6}}\] are covalent and                 [IIT 1994]

A)                 Three centre bond         

B)                 Hydrogen bond

C)                 Two centre bond

D)                 None of the above

Correct Answer: A

Solution :

           The diborane molecule has two types of  B ? H bond :            (i) \[B-{{H}_{t}}\]? It is a normal covalent bond.            (ii) \[B-{{H}_{b}}\]? It is a three centred bond.