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Q.

The number of three centred, two electron bonds in diborane is

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a

2

b

6

c

3

d

4

answer is A.

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Detailed Solution

  • Each B atom uses sp3 hybrids for bonding. Out of the four sp3 hybrids on each B atom, one is without an electron shown in broken lines. The terminal B-H bonds are normal 2-centre-2-electron bonds but the two bridge bonds are 3-centre-2-electron bonds. The 3-centre-2-electron bridge bonds are also referred to as banana bonds.
Diborane is: | Chemistry Questions
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The number of three centred, two electron bonds in diborane is