What are the three types of alkadienes?

Answer 1

1. Cumulated dienes have the double bonds sharing a common atom as in a group of compounds called allenes.
2. Conjugated dienes have conjugated double bonds separated by one single bond.
3. Unconjugated dienes have the double bonds separated by two or more single bonds. They are usually less stable than isomeric conjugated dienes. This can also be known as an isolated diene.

Answer 2

The three types of alkadienes are conjugated, non-conjugated, and cumulated. Conjugated alkadienes have alternating single and double bonds with no intervening single bonds between the double bonds. Non-conjugated alkadienes have two double bonds separated by at least one single bond. Cumulated alkadienes have a carbon-carbon triple bond with two double bonds on the same carbon atom.