Predict the length of the carbon–carbon bond you would expect if two H2C molecules reacted with each other by a combination reaction.

Verified step by step guidance

1. Step 1: Understand the structure of the H2C molecule. H2C is a simplified representation of a methylene group, which is a CH2 group. In organic chemistry, methylene groups can form double bonds with other carbon atoms.
2. Step 2: Consider the type of bond formed in a combination reaction between two CH2 groups. When two CH2 groups react, they typically form a double bond, resulting in a molecule like ethylene (C2H4).
3. Step 3: Recall the typical bond length for a carbon-carbon double bond. In organic chemistry, the average bond length for a C=C double bond is approximately 1.34 Å (angstroms).
4. Step 4: Compare this bond length to other types of carbon-carbon bonds. For context, a single C-C bond is about 1.54 Å, and a triple C≡C bond is about 1.20 Å.
5. Step 5: Conclude that the expected bond length for the carbon-carbon bond formed in this reaction is characteristic of a double bond, approximately 1.34 Å.