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Lyndons Worksheet Question 2

Posted: Fri Nov 29, 2019 3:02 pm
by Vincent Leong 2B
For the composition of each bond and hybridization of each lone pair of HCOOH, how do we know to include the energy level when writing the hybridization? For example, in the C-O bond, the notation is sigma(C2sp^2, Osp^3). Why does oxygen not have a 2 before its sp3 hybridization? Also, how can we tell if an atom will occupy an unhybridized p orbital instead of a hyrbidized sp^2 orbital (Im talking about the double bonded O in HCOOH)?

Re: Lyndons Worksheet Question 2

Posted: Sat Nov 30, 2019 3:10 pm
by Victoria Li 1L
You're right actually! It should be O2sp2, my bad. And for the double bonded O: iirc it wants to make sigma bonds first, so its stabler hybrid orbitals are used in making the sigma bond. The pi bond is then formed with the leftover unhybridized 2p orbital. This happens because the electron wants to stay in a different orbital to reduce spin pair repulsion.