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Boron Family: Borane

Boron Family: Borane

23. Chemistry of the Nonmetals / Boron Family: Borane / Problem 2

The structure of tetraborane(10) is shown below. The B–H terminal bonds are shorter than the B–H bridge bonds. Explain why.

ANSWERS OPTIONS

A

The B–H bridge bonds are longer than the terminal B–H bonds because they are weaker electron-deficient bonds.

B

The B–H bridge bonds are longer than the terminal B–H bonds because they have greater electron density and experience greater repulsion.

C

The B–H bridge bonds are longer than the terminal B–H bonds because they are ordinary covalent bonds.

D

The B–H bridge bonds are longer than the terminal B–H bonds because they have lesser electron density and experience greater repulsion.

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