As two neutral atoms approach each other, which type of intermolecular force primarily acts between them?

• A. Covalent bonding
• B. Hydrogen bonding
• C. London dispersion forces
• D. Ionic bonding

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the nature of the atoms involved. Since the problem states 'two neutral atoms,' these are individual atoms, not ions or molecules with permanent dipoles.
2. Step 2: Recall the types of intermolecular forces. Covalent and ionic bonding are types of intramolecular forces (within molecules or compounds), not intermolecular forces (between atoms or molecules).
3. Step 3: Recognize that hydrogen bonding requires a hydrogen atom bonded to highly electronegative atoms like N, O, or F, which is not the case for two neutral atoms.
4. Step 4: Identify that London dispersion forces (also called induced dipole-induced dipole interactions) arise due to temporary fluctuations in electron distribution in atoms or nonpolar molecules, which is the primary force between neutral atoms.
5. Step 5: Conclude that as two neutral atoms approach each other, the primary intermolecular force acting between them is the London dispersion force.