Question at position 87 When two water molecules interact with each other, the partial negative charge at one end of a water molecule is attracted to the partial positive charge of another water molecule. What is this attraction called?a hydrophobic bonda covalent bonda hydrophilic bondan ionic bonda hydrogen bond

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The question asks about the interaction between two water molecules where the partial negative charge on one end of a water molecule is attracted to the partial positive charge on the neighboring molecule. This describes a specific type of intermolecular attraction.
Option a: 'a hydrophobic bond' refers to interactions that occur between nonpolar regions avoiding contact with water; it does not describe the attraction between opposite partial charges in water molecules, so this is not correct.
Option b: 'a covalent bond' involves sharing electrons within a molecule, such as the O–H bonds inside a single water molecule, and does not describe an intermolecular attraction between two molecules, so this is not correct.
Option c: 'a hydrophilic bond' is not a standard chemical term for a specific bond type; while water is hydrophilic and forms attractions with polar substances, the canonical term for the attraction between opposite partial charges across water molecules is a specific kind of dipole–dipole interaction, not a named 'hydrophilic bond.' This makes the option inaccurate.
Option d: 'an ionic bond' involves full transfer of electrons and the attraction between fully charged ions; water–water interactions involve partial charges, not full ions, so this is incorrect.
Option e: 'a hydrogen bond' is the well-known interaction where a hydrogen atom attached to a highly electronegative atom (like oxygen in water) weakly attracts or is attracted to another electronegative atom in a neighboring molecule, consistent with the described partial charges and their attraction. This aligns with the classic explanation of hydrogen bonding between water molecules.
Overall, the description in the stem matches the concept typically called a hydrogen bond, while the other options either describe different types of bonds or use nonstandard terminology that does not fit the described interaction.

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