Final answer:
The hybridization of the carbons, from left to right, in CH3CH=CHCl is sp3, sp2, and sp.
Step-by-step explanation:
The carbon atoms in the molecule CH3CH=CHCl have hybridizations of sp3, sp2, and sp, from left to right. The hybridization of the first carbon (on the left) is sp3 because it is connected to three hydrogen atoms and one other carbon atom.
The second carbon has sp2 hybridization because it is connected to two hydrogen atoms and one double bond with the third carbon. The third carbon has sp hybridization because it is connected to one hydrogen atom and one chlorine atom, and has a triple bond with the second carbon.