Textbook Question
Determine the kinds of intermolecular forces that are present in each element or compound. b. I2
Ch.12 - Liquids, Solids & Intermolecular Forces
Chapter 12, Problem 42d
Determine the kinds of intermolecular forces that are present in each element or compound. d. N2
Verified step by step guidance1
Identify the type of molecule: N_2 is a diatomic molecule composed of two nitrogen atoms.
Determine the polarity of the molecule: N_2 is a nonpolar molecule because the two nitrogen atoms have the same electronegativity, resulting in an equal sharing of electrons.
Recognize the types of intermolecular forces: Nonpolar molecules like N_2 primarily exhibit London dispersion forces.
Understand London dispersion forces: These are weak intermolecular forces arising from temporary dipoles that occur when electron clouds fluctuate momentarily.
Conclude the analysis: The only intermolecular force present in N_2 is London dispersion forces.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Intermolecular Forces
Intermolecular forces are the attractive forces between molecules that influence physical properties such as boiling and melting points. These forces can be categorized into several types, including hydrogen bonding, dipole-dipole interactions, and London dispersion forces. Understanding these forces is crucial for predicting the behavior of substances in different states of matter.
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London Dispersion Forces
London dispersion forces are a type of intermolecular force that arise from temporary fluctuations in electron density within molecules, leading to the formation of instantaneous dipoles. These forces are present in all molecules, regardless of polarity, and are particularly significant in nonpolar substances like nitrogen gas (N2). The strength of these forces increases with the size and polarizability of the molecules involved.
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Molecular Structure of N2
Nitrogen gas (N2) consists of two nitrogen atoms bonded by a triple covalent bond, resulting in a diatomic, nonpolar molecule. Due to its nonpolar nature, N2 does not exhibit dipole-dipole interactions or hydrogen bonding, making London dispersion forces the only type of intermolecular force present. This understanding helps explain the low boiling point and gas state of nitrogen at room temperature.
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Related Practice
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