- #1

SlothNast

- 6

- 0

## Homework Statement

"Calculate the force of attraction between a K +

and an O 2- ion whose centers are separated

by a distance of 1.5 nm."

## Homework Equations

F = [ k (Z1)(Z2) ] / r^2

## The Attempt at a Solution

Both valences are filled when K is a + charge and O is a 2- charge. My main problem is I don't know what to use for "Z". I would just use 1 and -2, but the shells are filled and maybe there isn't much attraction at all?

Any help is greatly appreciated, thanks!

Henry