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No, the hydrogen bond is between the N/O/F that the hydrogen must be bonded to and another N/O/F that has a pair of electrons to form the bond. The H will always have a slight positive charge in this case, so the hydrogen bonds will always include a H and a nitrogen, oxygen, or fluorine atom.
No. This is because in order for a hydrogen bond to take place the hydrogen atoms in a molecule need to exhibit a slightly positive charge, so they can be attracted to the slightly negative N,O, or F. This means that the hydrogen atoms will repel each other and therefore cannot hydrogen bond.
No; Hydrogen bonding occurs because hydrogen is "electropositive", or only slightly electronegative. N, O, and F are highly electronegative, and thus attract hydrogen. Hydrogen doesn't have enough strength to attract other hydrogens' electrons if they are already separately bonded
An H-atom must be attracted to N, O, or F in order to call it a hydrogen bond. If an H-atom of a molecule is attracted to an H-atom of another molecule, then it is not considered an H-bond. In fact, hydrogens generally are not attracted to each other since usually H atoms are both partially positive within their molecules, and therefore two partial positive molecules would not be attracted to each other.
No a hydrogen bonding with another hydrogen is not considered hydrogen bonding. This type of interaction is also not favorable since hydrogen would be delta positive so two delta positive atoms would not be attracted to one another.
Melanie Krahn 1C wrote:So to clarify, in conclusion, a hydrogen bond only exist between H and an N, O, or F molecule? H bonds are polar correct? Because the H is attracted to a more electronegative atom?
Hi! I believe that hydrogen bonds exist between a hydrogen atom (covalently bonded specifically to F/O/N within the molecule) and another molecule's electromagnetic atom that has an available lone pair. Thus, I believe we could classify the covalent bond that the hydrogen atom experiences intramolecularly as “polar,” but I don’t think we classify the hydrogen bond itself as a polar bond, because it is an intermolecular force of attraction, not a covalent bond. Hope this makes sense!
No. This is because a hydrogen bond only forms between hydrogen and the N/O/F because H need to have a slight positive charge and the other atom will ave slightly negative charge. If two hydrogen bond together, then no electronegativity difference will be shown, thus showing no slight charge and no hydrogen bond.
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