Lattice Energy Formula

[justadream]

Just want to confirm:

Lattice energy is proportional to:

kq1q2 / r

Note how the bottom is not r^2.

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[Cawolf]

That is the formula for electrical potential energy between two charged particles.

I didn't know that was lattice energy, but it makes sense.

If the bottom was squared, then it would be the attractive force.

 

[justadream]

@Cawolf
Okay. I noticed that in physics, the formulas having to do with energy are always proportional to 1/r but those having to do with force are proportional to 1/r^2.

 

[Cawolf]

Yah that has to do with the force being the derivative of the potential energy curves.