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In diborane, the two H-B-H angles are ne...

In diborane, the two `H-B-H` angles are nearly

A

`60^(@),120^(@)`

B

`95^(@),120^(@)`

C

`95^(@),150^(@)`

D

`120^(@),180^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
Dilthey in `1921` proposed a bridge structure for diborane. Four hydrogen atoms, two on the left and two on the right, known as terminal hydrogen and two boron atoms lie in the same plane. Two hydrogen atoms forming bridges, one above and other below, lie in a plane perpendicular to the rest of molecule.
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Knowledge Check

  • In diborane, the H-B-H bond angle is 120^(@) . The hybridization of borons is likely to be

    A
    `sp`
    B
    `sp^(2)`
    C
    `sp^(3)`
    D
    `dsp^(2)`

  • A : In Diborane containing eight -B-H bonds only four B-H bonds are on the plane . R : Boron in B_(2) H_(6) is sp^(2) hybridised .

    A
    If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark (1)
    B
    If both Assertion & Reason are true but the reason is not the correct explanation of the assertion , then mark (2)
    C
    If Assertion is true statement but Reason is false , then mark (3)
    D
    If both Assertion and Reason are false statements , then mark (4)

  • The H-O-H bond angle in water is

    A
    `109.5^@`
    B
    `107^@`
    C
    `102^@`
    D
    `104.5^@`