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Questions and Answers
What types of molecules are primarily involved in hydrogen bonding?
What types of molecules are primarily involved in hydrogen bonding?
- Molecules with a high number of double bonds
- Molecules with hydrogen atoms bonded to very electronegative elements (correct)
- Molecules containing only carbon atoms
- Molecules that are nonpolar
Which of the following accurately describes the nature of the hydrogen atom involved in hydrogen bonding?
Which of the following accurately describes the nature of the hydrogen atom involved in hydrogen bonding?
- It is neutral and has no polar character.
- It forms covalent bonds without interaction with other molecules.
- It is highly polarised and attracts lone pair electrons from electronegative atoms. (correct)
- It carries a positive charge and is involved in ionic bonds.
How does the strength of hydrogen bonds compare to covalent bonds within a molecule?
How does the strength of hydrogen bonds compare to covalent bonds within a molecule?
- Hydrogen bonds are stronger than covalent bonds.
- Hydrogen bonds are weaker than covalent bonds. (correct)
- Hydrogen bonds are equivalent in strength to covalent bonds.
- Hydrogen bonds can only form in the absence of covalent bonds.
In hydrogen bonds, which two types of atoms are typically involved?
In hydrogen bonds, which two types of atoms are typically involved?
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What characterizes the hydrogen bonding interaction between two molecules?
What characterizes the hydrogen bonding interaction between two molecules?
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Study Notes
Hydrogen Bonds
- Hydrogen bonds represent the strongest type of intermolecular force.
- These bonds form between molecules containing hydrogen atoms bonded to highly electronegative elements like fluorine, oxygen, or nitrogen.
- The electronegativity difference results in a highly polarized hydrogen, creating a partial positive charge (δ+).
- This δ+ hydrogen atom is attracted to the lone pairs of electrons on a small, highly electronegative atom in a neighboring molecule.
- These hydrogen bonds bridge two molecules (larger) than the internal covalent bonds within the molecules
- The hydrogen bond is often depicted as a dashed or dotted line.
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