Question

Which of the following forces is involved in dinitrogen?

• A. Dipole - dipole interaction
• B. Dipole - induced dipole interaction
• C. London dispersion force
• D. Hydrogen bonding

Hint:

London dispersion forces are the only intermolecular forces present in non-polar molecules like $O_2, N_2, H_2,$ and noble gases.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks for the primary intermolecular force present between molecules of dinitrogen ($N_2$).
Step 2: Detailed Explanation:
1. Dinitrogen ($N_2$) is a homonuclear diatomic molecule.
2. Because both nitrogen atoms have the same electronegativity, the bond is non-polar, and the molecule as a whole has zero dipole moment.
3. Non-polar molecules do not have permanent dipoles, so they cannot exhibit dipole-dipole or hydrogen bonding.
4. The only intermolecular forces acting between non-polar molecules are London dispersion forces (also known as induced dipole-induced dipole forces), which arise from temporary fluctuations in electron density.
Step 4: Final Answer:
The forces involved in dinitrogen are London dispersion forces.