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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: sam12103 on November 19, 2009, 05:14:59 PM

Title: Help please with finding Bond angles, PLEASE someone help me?
Post by: sam12103 on November 19, 2009, 05:14:59 PM

Give the approximate values for the indicated bond angles.

a. O-S-O in So2

b. F-B-F angle in BF3

c. Cl-C-Cl angle in CL2CO

answers in the back of the book
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a. slightly less than 120 degrees;The lone pair of S should reduce the predicted 120 degrees angle slightly. 120 degrees

b. 120 degrees

c. Slightly less than 120 degrees; The two lone pairs of electrons on O will reduce the predicted 120 degree angle slightly.

Title: Re: Help please with finding Bond angles, PLEASE someone help me?
Post by: sjb on November 19, 2009, 05:20:59 PM

Seems you have approximate bond angles, are you after better explanations of justifications?

Title: Re: Help please with finding Bond angles, PLEASE someone help me?
Post by: sam12103 on November 19, 2009, 05:25:53 PM

I am soo sorry, I forgot to state what I need help with... Please explain to me how they came up with these answers, I am very confused

Title: Re: Help please with finding Bond angles, PLEASE someone help me?
Post by: sjb on November 21, 2009, 07:44:18 AM

What do you know about VSEPR, or similar? http://en.wikipedia.org/w/index.php?title=VSEPR_theory&oldid=326091813