c2f4 molecule?

Question

Identify the hybridization of the carbon atom(s) in C2F4

Also give the number of π bonds in the molecule or ion

Answer 1

Sp2 because there is a double bond between the carbons. That also means there is 1 pi bond. Single bonds are always sigma bonds. In a double bond there is one sigma bond and one pi bond.

Answer 2

In CF2=CF2 the carbon atoms are connected with a double bond, so the hybridization of both carbon atoms is sp2. There are 5 σ bonds (4 C-F and 1 C-C) and one π (C-C) bond int the molecule of CF2=CF2. Every double C=C bond consists of one σ and one π bond.