$\mathop {\mathop {Cl - \mathop {\mathop C\limits_| }\limits_{Cl} = \mathop {\mathop C\limits_| }\limits_{Cl} - Cl}\limits_{s{p^2}{\text{ - hybridization}}} }\limits_{{\text{Bond angle }} = {\text{ 12}}{{\text{0}}^{\text{o}}}} $
$H_2C = C = CH - CH = O$
$sp^3$ - $sp^2$ - $sp$