$B - H - B$ bridge in $B_{2} H_{6}$ is formed by the sharing of :

2 electrons

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4 electrons

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1 electron

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3 electrons

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Solution

The correct option is A 2 electrons
Diborane possesses four $B - H$ covalent bonds and two, three centered two electron bonds, $B - H - B$ or hydrogen bridge bonds. These bonds are also known as banana bonds.

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Which of the following does not apply to metallic bond ?

1) Overlapping valence electrons

2) Mobile valence electrons

3) Delocalized electrons

4) Highly directed bonds

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