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Question

The total number of atoms lie in a same plane in diborane are :

A
4
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B
6
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C
8
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D
2
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Solution

The correct option is B 6
The four terminal hydrogen atoms and two boron atoms lie in one plane, above and below this plane are two bridging hydrogen atoms.

THEORY
Diborane (B2H6):
Binary compounds of Boron with Hydrogen are called boron hydrides or boranes. The simplest boron hydride known is diborane.

The four-terminal hydrogen atoms and two boron atoms lie in one plane, above and below this plane are two bridging hydrogen atoms.
The four-terminal B-H bonds are regular two centre-two electron bonds while the two bridge (B-H-B) bonds are three centre-two electron bonds.


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