What is the strongest type of intermolecular force present in chf3?

Explanation:

There are 3 basic types of intermolecular forces (forces between molecules):

London dispersion forces are weak attraction forces between molecules due to temporary displacement of the electron density over the atoms, resulting in the formation of temporary dipoles. The electrostatic attraction between those dipoles is the weak dispersion force.

Dipole - dipole attraction forces happen in polar molecules, such as CHF₃, because the dipoles are permanent. The dipoles are the result of the assymetryc distribution of the electron charge, due to the presence of atoms with different electronegativities. In CHF₃, F is much more electronegative than C, causing the uneven distribution of the electrons, which leads to the formation of the dipoles and the dipole - dipole forces which are stronger than london dispersion forces.

Hydrogen bonds, the strongest intermolecular forces, are only present when hydrogen is bonded to a small a very electronegative atom, like oxygen, nitrogen or fluor. Since, in CHF₃, hydrogen is bonded to C, there is not formation of hydrogen bonds.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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