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#Post#: 1139--------------------------------------------------
Water
DIR By: Dean
Date: November 17, 2012, 4:24 am
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Why water forms many hydrogen bonds?
#Post#: 1181--------------------------------------------------
Re: Water
DIR By: syed hussain ali
Date: November 19, 2012, 4:06 pm
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very simple because of difference of E.N value of Oxygen and
Hydrogen. (3.5 Oxygen 2.1 hydrogen = 1.4 compound nature polar)
and the other reason is the lone pairs of electrons of oxygen.
#Post#: 1197--------------------------------------------------
Re: Water
DIR By: Dean
Date: November 22, 2012, 4:33 am
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Thanks. So all polar molecule will have hydrogen bond??
#Post#: 1201--------------------------------------------------
Re: Water
DIR By: Michel
Date: November 23, 2012, 12:02 am
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--- Quote from: Dean link ---
>
> Thanks. So all polar molecule will have hydrogen bond??
>
--- End Quote ---
Not necessarily. Hydrogen bonding is present when Hydrogen is
bonded to an electronegative atom, like F, Cl, O, N, etc. The H
atom will have partial positive charge, and the electronegative
atom partial negative charge. The hydrogen bond could exist as a
short range attractive force between the H atom of one molecule
and the electronegative atom of the other molecule. Thus
adjacent molecules tend to associate themselves in pairs, held
together by hydrogen bonding
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