To answer your question, the correct choice is (a) dipole moment, polarizability. Let's break this down to understand why this is the case.
Understanding Induced Dipole Moments
An induced dipole moment occurs when a permanent dipole, which has a positive and a negative end due to an uneven distribution of electrons, interacts with a neutral molecule. This interaction can cause the neutral molecule to develop its own dipole moment, even though it initially has no charge separation.
The Role of Permanent Dipole Moment
The strength of the induced dipole moment is influenced by the strength of the permanent dipole moment of the polar molecule. A stronger permanent dipole will create a more significant distortion in the electron cloud of the neutral molecule, leading to a larger induced dipole moment. This is where the term "dipole moment" comes into play.
Polarizability of Neutral Molecules
Polarizability refers to how easily the electron cloud of a neutral molecule can be distorted by an external electric field or a nearby dipole. Molecules with high polarizability can develop a significant induced dipole moment when influenced by a nearby permanent dipole. Thus, the polarizability of the neutral molecule is crucial in determining the extent of the induced dipole moment.
Putting It All Together
In summary, the induced dipole moment depends on two key factors:
- Dipole Moment: The strength of the permanent dipole moment of the polar molecule.
- Polarizability: The ability of the neutral molecule to become polarized in response to the electric field created by the permanent dipole.
Therefore, the correct answer is (a) dipole moment, polarizability. This relationship is fundamental in understanding interactions between polar and non-polar molecules, which is essential in various fields such as chemistry and materials science.
