Question

the c₂h₂f₂ molecule can exist in either of the following two forms:
part 1 of 2
what is the hybridization of c in the molecule?
part 2 of 2
which structure has a dipole moment?

Explanation:

Step1: Determine hybridization of C

Each carbon atom in $C_2H_2F_2$ has a double - bond and two single - bonds. The number of electron - groups around each carbon is 3. According to the VSEPR theory and hybridization rules, when the number of electron - groups is 3, the hybridization is $sp^2$.

Step2: Analyze dipole moment

In the first structure, the bond dipoles do not cancel out due to the non - symmetrical arrangement of the polar C - F bonds. In the second structure, the bond dipoles of the C - F bonds are symmetrically arranged and cancel each other out. So, the first structure has a dipole moment.

Answer:

Part 1 of 2: $sp^2$
Part 2 of 2: The first structure