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## Homework Statement

Є

_{r }= 3.0, atomic density = 10

^{28}atoms/m

^{3}. The mag. of the E-field is 10,000 [V/m]. Two electrons in outer orbital shell will distort with an applied E-field. If both both electrons follow some orbital path as a pair, find spacing between center of nucleus and average location of electrons.

## Homework Equations

Є

_{r }= 1 + Χ

_{e}

Є = Є

_{o}*Є

_{r}

**P**= Є

_{o}*Χ

_{e}*

**E**

## The Attempt at a Solution

If I solve for the magnitude of polarization, I come up with mag(

**P**) = Є

_{o}*Χ

_{e}*mag(

**E**). If so, I receive mag(

**P**) = 1.771e

^{-7}[V/m]. If need be, the magnitude of the electric flux density is: mag(

**D**) = Є*mag(

**E**) = 2.66e

^{-7}[C/m

^{2}]. What is really throwing me off is the atomic density! I have no idea how to incorporate this it does not seem applicable with any of the formulas in my text. I am kind of confused by this problem, in general. I do not know how to get past my attempt above at working some of the variables.

I appreciate any help you may be able to give me, and I thank you sincerely in advance!