1.

Take r as the distance between two molecules. The energy between stationary polar molecules is proportional to ____________ in the case of dipole-dipole intercations.

A. 1/r<sup>3</sup>
B. r<sup>3</sup>
C. r<sup>2</sup>
D. 1/r<sup>2</sup>
Answer» B. r<sup>3</sup>


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