What is the chemical structure of propadiene?

The chemical structure of propadiene is represented by the formula CH₂=C=CH₂. This compound is an example of an alkyne with two double bonds between the carbon atoms. The notation shows that there are two adjacent double bonds involving three carbon atoms, making it a straightforward molecule with a linear arrangement.

The presence of the two double bonds signifies that propadiene is an instance of a conjugated system, where the pi bonds can interact due to the alternating double bond arrangements. This structure also contributes to the molecule's reactivity characteristics, which are important in organic synthesis and chemical reactions.

Understanding the correct structure involves recognizing that each carbon in propadiene is bonded according to standard valency rules: each carbon forms a total of four bonds. In CH₂=C=CH₂, the terminal and central carbon atoms are appropriately connected to satisfy this requirement with the correct number of hydrogen atoms. This structural clarity differentiates propadiene from other compounds that may have similar-looking formulas but do not have the same connectivity and bonding characteristics.