Final answer:
The hybridizations of the carbons in CH₃CH=CHCl, from left to right, are sp³, sp², sp², sp³.
Step-by-step explanation:
In the molecule CH₃CH=CHCl, the carbon atoms from left to right have the following hybridizations:
The first carbon (CH₃) has four sigma bonds and no double bonds or lone pairs, so its hybridization is sp³.
The second carbon (CH=) has three sigma bonds, one pi bond, and no lone pairs, so its hybridization is sp².
The third carbon (=CH) has three sigma bonds, one pi bond, and no lone pairs, so its hybridization is sp².
The fourth carbon (Cl) has four sigma bonds and no double bonds or lone pairs, so its hybridization is sp³.