Question

question 6 · 1 point
what is the geometry of a carbonyl group?
select the correct answer below:
trigonal planar
linear
tetrahedral
ring

Explanation:

The carbonyl group ($\ce{C=O}$) has a carbon atom bonded to an oxygen atom via a double bond. The carbon atom in a carbonyl group is $\ce{sp^2}$ hybridized. $\ce{sp^2}$ - hybridized carbon has a trigonal planar geometry. In a carbonyl group, the carbon atom forms three $\sigma$ - bonds (two with other atoms and one with the oxygen atom through the $\ce{sp^2}$ - hybrid orbitals) and has a $\pi$ - bond with the oxygen atom (formed by the un - hybridized $\ce{p}$ - orbital of carbon and $\ce{p}$ - orbital of oxygen). The three $\sigma$ - bonds are in a plane and are separated by $120^{\circ}$, which is characteristic of trigonal planar geometry.

Answer:

trigonal planar