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Lena772

  • one year ago

Identify the molecule listed below that cannot form Hydrogen bonds with an identical molecule. H2O NH3 BH3 CH3OH

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  1. JFraser
    • one year ago
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    In order to H-bond, a molecule MUST HAVE a lone-pair of electrons on a central atom and be able to attract a neighboring hydrogen that itself is held with a very polar bond. You should draw some lewis structures

  2. Lena772
    • one year ago
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    CH3OH?

  3. Abhisar
    • one year ago
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    In order to form a H-bond you must have a hydrogen attached to a highly electronegative element (N, O and F)

  4. Abhisar
    • one year ago
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    Look up the options, which one do you think doesn't have a hydrogen attached to any of the electron hogs (highly EN elements; N, O, F)

  5. arindameducationusc
    • one year ago
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    I agree with @Abhisar so, I guess it should be BH3 right guys?

  6. Rushwr
    • one year ago
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    H bonds are formed between a hydrogen atom and an electronegative atom. F>O>N>Cl <---This is the decreasing order of the electronegativity of the main electronegative atoms. Since Boron is more in to electropostitve side rather than electronegativity side we can for BH3. :)

  7. Photon336
    • one year ago
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    For hyrogen bonding to occur you need to have either F,O, or N covalently bonded to a hydrogen to act as the hydrogen bond donor, AND a lone pair of electrons to act as a hydrogen bond acceptor.

  8. Photon336
    • one year ago
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    |dw:1439841956985:dw||dw:1439842041594:dw| |dw:1439842098512:dw|

  9. Photon336
    • one year ago
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    We can see from these elements here, that in order to hydrogen bond there also must be a lone pair of electrons available to act as an acceptor as you see, so both requirements must be met for this to happen.

  10. Photon336
    • one year ago
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    Boron is electron deficient, so it has no lone pairs that can participate in H bonding with another BH3 molecule, and also it's not that highly of an electronegative element to do so anyway. |dw:1439842257647:dw| @lLena772

  11. Photon336
    • one year ago
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    @Lena772

  12. arindameducationusc
    • one year ago
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    nice one @Photon336

  13. Photon336
    • one year ago
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    Thanks @arindameducationusc the pictures are a little messy but hey i think I got the point across lol

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