MCQ
The structure of diborane contains:
- ✓Four $2C-2e$ bonds and two $3C-2e$ bonds
- BTwo $2C-2e$ bonds and two $3C-2e$ bonds
- CTwo $2C-2e$ bonds and two $3C-3e$ bonds
- DFour $2C-2e$ bonds and two $3C-3e$ bonds
✓
Answer
Correct option: A.
Four $2C-2e$ bonds and two $3C-2e$ bonds
a
This is the structure of $B _2 H _6$
This is the structure of $B _2 H _6$
Four hydrogen are connected to $B$ atoms by covalent bonds. So there are four $2$ centered$- 2$ electron bonds
$2$ hydrogen atoms are connected by bridge and it is connected to $2$ boron atoms . So, there are $3$ -centred-$2$- electron bonds
$( H - B ) \rightarrow 2\quad C -2 e$ bonds
$(B-H-B) \rightarrow 3\quad C-2e$ bonds
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