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Philipsmett
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According to QFT, are there hydrogen bonds or Van der Waals force? Or this an outdated concept of classical physics?
The Van der Waals force is a type of intermolecular force that arises due to the interaction between electrically neutral molecules. It is caused by the temporary dipole moments that occur in molecules due to the constant motion of their electrons.
In quantum physics, the Van der Waals force is calculated using the London dispersion equation, which takes into account the polarizability of molecules and the distance between them. This equation is based on the quantum mechanical description of electrons and their behavior in molecules.
The Van der Waals force is important in understanding the properties of gases, liquids, and solids at the molecular level. It also plays a crucial role in determining the physical and chemical properties of materials, such as their boiling and melting points, viscosity, and surface tension.
The Van der Waals force is a weaker force compared to other intermolecular forces such as hydrogen bonding or ionic bonding. It is also a non-directional force, meaning it acts equally in all directions, unlike covalent or ionic bonds which have specific directional properties.
Yes, the Van der Waals force can be manipulated by changing the distance between molecules or by altering the polarizability of the molecules. This can be achieved through various methods such as changing the temperature, pressure, or introducing polarizing agents.