Homework Help: chem

Posted by Natash on Monday, November 24, 2008 at 2:20am.

what is the appropriate hybridization for the carbon atom in CO2?

the explanation I was given is 2 electron groups around the center atom carbon suggest sp hybridization. the 2 unhibridized p orbitals on carbon form the 2 pi bonds.

My question is why pi bonds? Isn't it supposed to be sigma ?

chem - DrBob222, Monday, November 24, 2008 at 10:37am
The CO2 molecule is
O=C=O
In a double bond, one bond is the sigma and the other is a pi. In triple bonds, one sigma and two pi bonds.

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