Intermolecular Forces of Attraction (3.7) – Unit 3 | 9th Class Chemistry (Punjab Board)
Автор: Learnovation2024
Загружено: 2026-02-21
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Intermolecular forces of attraction are the weak forces that exist between molecules, not within them. These forces play a crucial role in determining the physical properties of substances such as boiling point, melting point, solubility, viscosity, and state of matter. Although intermolecular forces are much weaker than ionic or covalent bonds, they are essential for understanding the behavior of liquids and gases.
In 9th Class Chemistry (Punjab Board), Unit 3 explains the main types of intermolecular forces: London dispersion forces, dipole–dipole interactions, and hydrogen bonding. Stronger intermolecular forces result in higher boiling points and greater attraction between molecules. This topic helps students understand everyday phenomena such as why water is liquid at room temperature and why different substances have different physical characteristics.
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