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Chapter 11: Problem 17

Which has larger London dispersion forces between its molecules, CF \(_{4}\) or \(\mathrm{CCl}_{4}\) ?

Short Answer

Expert verified
CCl4 has stronger London dispersion forces between its molecules than CF4 does.

Step by step solution

01

Identify the types of intermolecular interactions

For both CF4 and CCl4, the primary type of intermolecular interaction is the London dispersion force.
02

Compare the sizes of the molecules

We compare the sizes of the F and Cl atoms. Here we find that Chlorine is a larger atom compared to Fluorine.
03

Determine which molecule would have stronger London dispersion forces

Because Cl is larger than F, it has a larger electron cloud and is able to form stronger temporary dipoles. Consequently, the strength of the London dispersion forces is greater for CCl4 than for CF4.

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