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The sp2 hybridization is the mixing of one s and two p atomic orbitals, which involves the promotion of one electron in the s orbital to one of the 2p atomic orbitals. The combination of these atomic orbitals creates three new hybrid orbitals equal in energy-level. The hybrid orbitals are higher in energy than the s orbital but lower in energy than the p orbitals, but they are closer in energy to the p orbitals. The new set of formed hybrid orbitals creates trigonal structures, creating a molecular geometry of 120 degrees.
The combinaiton of an s orbital and two p orbitals from the same valence shell gives a set of three equivalent sp2 hybridized orbitals that point in directions separated by 120 degrees. The directions of these new, hybridized orbitals are the dictators of the spatial arrangement for bonding. the SP2 hybridized orbitals are the same in size, energy shape but different in the spatial orientation. This unique orientation is very important and is what characterized an SP2 hybridized orbital from other hybridized orbitals.
1. What is a sp2 hybridized atomic orbital? What is the molecular geometry of an SP2 hybridized atom?
An sp2 hybridized atomic orbital is the mixing of 1 S orbital and 2 P orbitals, a sp2 hybridized atom has 3 sigma bonds so its molecular geometry is trigonal with 120 degree bond angles.
2. What is the importance of correctly identifying the hybridization of atoms with trigonal structures?
It tells you the bond angle. If they are sp2, they would have 120 degree bond angles. sp3 would have 109.5 degree bond angles
3. What is the hybridization of a benzene ring?
Benzene has a sp2 hybridization
4. What is the hybridization of the carbon atom in the following structures: a) ketone, b)aldehydes, c) carboxylic acids, d) alcohols, e) esters, f) ethers?
They all have sp2 hybridization
5. Write the hybridization of an amide for the Carbon atom and for the neighbor Nitrogen atom?
Both atoms have sp2 hybridization
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