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Sagot :
The only significant factors in determining the boiling points, in dispersion forces are Cl2, Ne, CCl4. Correct answer: letter A.
This is because these molecules do not form any significant intermolecular forces, such as hydrogen bonding or dipole-dipole interactions, so dispersion forces are the only significant factors in their boiling points.
What are dispersion forces?
Dispersion forces also known as London forces, are the weakest type of intermolecular forces. They are the forces of attraction between molecules due to the temporary, instantaneous dipoles that form as an electron in one atom is attracted to the nucleus of another atom.
These instantaneous dipoles induce dipoles in adjacent molecules, leading to attraction. Dispersion forces are responsible for the cohesion of nonpolar substances such as noble gases and hydrocarbons.
In which of the following groups of substances would dispersion forces be the only significant factors in determining boiling points?
I. Cl2
II. HF
III. Ne
IV. KNO2
V. CCl4
Group of options:
A. I, III, V
B. I, II, III
C. II, IV
D. III, IV, V
E. II, V
Learn more about dispersion forces:
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