Which of the following functional groups does not have at least one sp² hybridized carbon atom as a constituent of the group?

A) carboxylic acid
B) alkene
C) aldehyde
D) ether
E) ester

Sp Hybridized

An atomic orbital hybridization state where one s orbital and one p orbital combine, forming two degenerate, linearly oriented hybrid orbitals.

Functional Groups

Unique sets of atoms located in molecules that cause the molecules to undergo their characteristic chemical reactions.

Carbon Atom

The fundamental building block of organic molecules, characterized by its ability to form four bonds.