How are London dispersion forces formed?

Answer 1

When electrons travel around the nucleus, sometimes one side has a fewer amount of electrons than the other side. When this occurs, one side has a slight positive charge and the other side has a slight negative charge.

This imbalance of charge causes an atom from another molecule to have an imbalance of charge. Now, the sides of the atoms facing each other will have opposite charges, which attract. This force of attraction is the London dispersion force.

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Answer 2

Zoe Alexander

London dispersion forces are formed due to temporary fluctuations in electron distribution, creating temporary dipoles and inducing similar dipoles in neighboring molecules.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.