Number of terminal hydrogen atoms present in diborane?
A
2
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B
4
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C
6
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D
8
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Solution
The correct option is B 4 Diborane is an electron deficient molecule. The two boron atoms and the four terminal hydrogen atoms of the molecule are all in the same plane. These four terminal B -H bonds are regular 2-centered- 2 electron bonds. The bridging hydrogen atoms lie above and below this plane.