Answer:
D) hydrogen bonds
Explanation:
Hydrogen bonds are intermolecular forces — they are the forces of attraction between two different molecules.
For example, the partially positive H atom in HF is strongly attracted (H-bonded) to the partially positive F atom in a different HF molecule:
H-F···H-F.
All the other items are intramolecular — they occur within a single molecule.
A) Electronegativity. Wrong. Arises between the two atoms that are bonded together in a single molecule.
B) Double bonds. Wrong. Occur between two adjacent bonds in a single molecule, e.g., propene, CH₃CH=CH₂.
C) Covalent bonds. Wrong. Occur in a single molecule, e.g., methane, CH₄.
