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2E.17 D

Posted: Fri Nov 15, 2019 5:08 pm
by ayushibanerjee06
Can someone explain 2E.17 D?
The question is: Predict the bond angles at the central atom of the following molecules and ions: (a) ozone, O3; (b) azide ion, N32; (c) cyanate ion, CNO2; (d) hydronium ion, H3O+

Re: 2E.17 D

Posted: Fri Nov 15, 2019 5:20 pm
by Haley Dveirin 1E
In the Lewis structure the central O atom has one set of lone pair electrons and then three hydrogens. Since it has 4 areas of electron density it is tetrahedral which has bond angles of 109.5. But since one of the regions is a lone pair, this pushes the other atoms away a little bit (because it has stronger repulsion) making those bond angles slightly less than 109.5.