Question

In looking at the bolded atoms in the answer choices, which pair consists of molecules having the same geometry?

Answer 1

Correct Answer: option C:The pair which consist of molecules having the same geometry is CH2CCI2 and CH2CH2.

Reason: 
Both of the above molecules contain double bonds. They are characterized by  sp^2 hybridization. Also, they possess a trigonal planar geometry. In trigonal planar system, the molecule consist of three equally spaced sp^2 hybrid orbitals, which arranged at angle 120 degree. 

Answer 2

The choices given were:

PCl3 and BF3

CH2O and CH3OH

CH2CCl2 and CH2CH2

CO2 and SO2

The correct option is CH2CCl2 and CH2CH2 because both of them contains a double bond which is sp^2 hybridized and it shows a trigonal planar geometry.