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### 2D. 19

Posted: **Sun Nov 17, 2019 11:00 pm**

by **Abigail Carter 4G**

Use the covalent radii in Fig. 2D.11 to calculate the bond lengths in the following molecules. Account for the trends in your calculated values: (a) CF 4 ; (b) SiF 4 ; (c) SnF 4 .

How do you use the covalent radii to calculate bond lengths? Also is this something that could be on test 2?

### Re: 2D. 19

Posted: **Sun Nov 17, 2019 11:33 pm**

by **sarahsalama2E**

im also wondering if this will be on Test 2?

but I just added the covalent radii to get the bond length.

### Re: 2D. 19

Posted: **Wed Dec 04, 2019 7:09 pm**

by **DTingey_1C**

You basically just find the radius of each atom that is bonded together in the table and you add them together. The sum of the covalent radii is the bond length. We will probably never see this on any test because it is a weird question since you need a table to calculate the values.

### Re: 2D. 19

Posted: **Wed Dec 04, 2019 7:53 pm**

by **Sears 4A**

yeah i dont think were expected to know how to calculate exact bond length for any tests in this course

### Re: 2D. 19

Posted: **Sun Nov 08, 2020 11:59 pm**

by **905579227**

Does anyone know if this will be on midterm 2, or where mid term 2 even ends?