Multiple Choice
What intermolecular force is responsible for the attraction between N2 molecules in liquid nitrogen?
13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
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Which factor is most important in determining the type of intermolecular force present in a substance?
A
The color of the substance
B
The temperature at which the substance boils
C
The polarity of the molecules
D
The molecular weight of the substance
Verified step by step guidance1
Identify the types of intermolecular forces: Intermolecular forces include London dispersion forces, dipole-dipole interactions, and hydrogen bonding. Each type of force is influenced by different molecular characteristics.
Understand the role of polarity: Polarity refers to the distribution of electrical charge over the atoms in a molecule. Molecules with a significant difference in electronegativity between atoms tend to be polar, leading to dipole-dipole interactions.
Consider the impact of molecular weight: While molecular weight can influence the strength of London dispersion forces, it is not the primary factor in determining the type of intermolecular force.
Evaluate the boiling point: The boiling point of a substance can provide insight into the strength of intermolecular forces but does not directly determine the type of force.
Conclude with the importance of polarity: The polarity of molecules is the most crucial factor in determining the type of intermolecular force present, as it directly influences whether dipole-dipole interactions or hydrogen bonding can occur.
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