Which of the following molecules has sp2 hybridization?

Which of the following molecules has sp2 hybridization?

Step 1: Understand what sp2 hybridization means. It involves one s orbital and two p orbitals mixing to form three equivalent sp2 hybrid orbitals.
Step 2: Identify the molecule in question, which is C2H4 (ethylene).
Step 3: Look at the structure of C2H4. Each carbon atom is bonded to two hydrogen atoms and one other carbon atom.
Step 4: Determine the number of bonds each carbon atom forms. Each carbon forms three sigma bonds (two with hydrogen and one with another carbon) and one pi bond (with the other carbon).
Step 5: Conclude that since each carbon atom forms three sigma bonds, it must be sp2 hybridized.

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