Which of the following represents the structure of 1,2-butadiene?

Which of the following represents the structure of 1,2-butadiene?

• A. CH₂=C=CH-CH₂
• B. CH₂=CH-CH=CH₂
• C. CH₃-CH=CH-CH₂
• D. CH₂-CH=CH-CH=CH₂

Answer: (A)

The correct representation of 1,2-butadiene is found in the option that depicts the structure as CH₂=CH-CH=CH₂. This compound consists of a four-carbon chain with two double bonds. The key features of 1,2-butadiene include: 1. **Number of Carbon Atoms**: It contains four carbon atoms, which is indicated by the name "butadiene" (the "but" prefix refers to four carbons). 2. **Position of Double Bonds**: The "1,2-" designation indicates that there are double bonds between the first and second carbon, as well as between the third and fourth carbon. The presence of double bonds gives it the designation of a diene (two double bonds). 3. **Structure Visualization**: In the correct structure, the first double bond is between the first and second carbons, and the second double bond is between the third and fourth carbons, maintaining the integrity of the molecule according to the nomenclature rules. While the other options represent various arrangements or types of hydrocarbons, only the option that shows CH₂=CH-CH=CH₂ accurately captures the structure of 1,2-butadiene with its correct carbon count

The correct representation of 1,2-butadiene is found in the option that depicts the structure as CH₂=CH-CH=CH₂. This compound consists of a four-carbon chain with two double bonds. The key features of 1,2-butadiene include:

1. Number of Carbon Atoms: It contains four carbon atoms, which is indicated by the name "butadiene" (the "but" prefix refers to four carbons).

2. Position of Double Bonds: The "1,2-" designation indicates that there are double bonds between the first and second carbon, as well as between the third and fourth carbon. The presence of double bonds gives it the designation of a diene (two double bonds).

3. Structure Visualization: In the correct structure, the first double bond is between the first and second carbons, and the second double bond is between the third and fourth carbons, maintaining the integrity of the molecule according to the nomenclature rules.

While the other options represent various arrangements or types of hydrocarbons, only the option that shows CH₂=CH-CH=CH₂ accurately captures the structure of 1,2-butadiene with its correct carbon count