00:01
In this video, we are going to use kulom's law to calculate the kulumbic attractive force between an n -a -plus and a cl -minus ion.
00:14
The anion is going to be bigger.
00:15
And we assume that they just touch.
00:17
And so we have this overall distance r, which is going to be half of, well, i guess it's just like the radius of the sodium plus the radius of the chlorine.
00:35
And we're going to take that in half.
00:36
So sodiums is 0 .095 and chlorine is 0 .181.
00:49
And this is in nanometers.
01:03
Then we can put that in our calculator.
01:07
We get 0 .138.
01:16
And we know that kulam's law says that the attractive force is going to be equal to some constant.
01:31
Well, we'll just call it k for now...