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Ch.9 - Chemical Bonding I: The Lewis Model

Chapter 9, Problem 58b

Refer to Figure 9.10 to estimate the percent ionic character of the BrF bond.

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Hello everyone in this video. We're trying to determine the approximate percent ionic character of this bond right here. So first we can go ahead and start off by calculating the delta electro negativity for this bond. So these values can either be found in your textbook or provided to you by your professor. So starting off with the browning That has a value of 2.8 And the chlorine will have a value of 3.0. So the delta E. And then Will be equal to 3. -2.8. Putting that into my calculator, I get the value of 0.2. So then over on this graph right here we can go ahead and first start off by drawing a diagonal line figure like. So Then we will draw a vertical line that intersects with the X-axis at a value of 0.2. So maybe over here like this again, we're just kind of approximating it. So it doesn't be entirely accurate. And then finally we go ahead and draw a horizontal line that intersects on the two lines. So we take a closer look at the intersection is right about here, you can go ahead and draw a horizontal line then like this, We see that the horizontal line cuts through y access at a point which is about a quarter away from to 25%. So if you do the math then 25% divided by R. Times 1/4 will give us 6%. So we can say that the estimated% 6%. And this right here is going to be my final answer for this question. Thank you all so much for watching.