What is tau or banana bond? from Chemistry The p-Block Elements
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    The p-Block Elements

    Multiple Choice QuestionsShort Answer Type

    11.

    What is the structure of BO subscript 3 superscript minus ion?

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    12.

    Name a hydride of boron which is used as reducing agent in organic chemistry. 

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    13.

    Does a molecule of BH3 exist?

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    Answer
    14.

    What is relative stability of +1 oxidation state in group 13.

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    15.

    Are all the B-H bonds in diborane equivalent?

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    16.

    What is tincal ?

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    17.

    What is tau or banana bond?

    The B.........H.........B bridges in diborane because of distorted sp3 hybridization, involving the empty 2pz orbital,thus resulting in the formation of a tau bond or a banana bond. It is a typical case of dual hybridization in the boron atom.

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    18.

    Name two elements used as semiconductors in electronic devices.

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    19.

    Why does boron not form B+3?

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    20.

    Arrange BCl3, BBr3 and BF3 in the decreasing order of Lewis acid character.

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