The total π electron density on the four carbon atoms of trans butadiene are in the ratio

Concept:

Butadiene is π conjugated system. It exists in cis as well as trans conformation.

Explanation:

In trans-butadiene, electrons are not localized at a particular atom. The π electrons are resonating and equally available on all the carbon atoms.

Thus, the ratio of electron density on all atoms is:

1: 1 : 1: 1

Conclusion:

Hence, the total π electron density on the four carbon atoms of trans-butadiene is in the ratio 1: 1 : 1: 1