Electrostatic force betwen two ions

AI Thread Summary
To find the electrostatic force between a Na+ ion and a Cl- ion separated by 0.5 nm, Coulomb's Law is applied, using the formula F = k * (|q1 * q2| / r^2). The charges are q1 = +1e and q2 = -1e, with e being the fundamental electric charge. The separation distance r is 0.5 nm. If the sodium ion is replaced by Li+ and the chloride ion by Br-, the force would change due to the different charges and sizes of the ions, affecting the overall interaction. Using these principles, the calculations can be completed effectively.
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Homework Statement



A. Find the electrostatic force between a Na+ ion and a Cl- ion separated by 0.5 nm.
B. Would the answer change if the sodium ion were replaced by Li+ and the CL ion by Br-?Explain.

Homework Equations


I believe you have to use Coulomb's Law...?
F=k* [(/q1//q2/) divided by (r^2^)]


The Attempt at a Solution


I have several of these to do and I'm not really sure where to even begin. If someone could show me step by step how to do this, I would be really greatful. Thanks!
 
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Just use coulomb's law. Plug in q1 and q2 and r and you're done!

q1=+1e and q2=-1e where e is the fundamental electric charge (you can just look up the conversion to coulombs). r=.5nm.
 
Thank you!
 
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