Mon January 16, 2012 By:

How many kinds of B-H bonds are there in B2H6. Explain.

Expert Reply
Mon January 16, 2012
The bonds between boron and the terminal hydrogen atoms are conventional 2-center, 2-electron covalent bonds. In the bonding between the boron atoms and the bridging hydrogen atoms
The bridging hydrogen atoms provide one electron each. Thus the B2H2 ring is held together by four electrons, an example of 3-center 2-electron bonding.
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