The bond length between all the four carbon atoms is same in 1, 3 - butadine. Explain with reason.

The bond length between all the four carbon atoms is same in 1, 3 - bu

1.	The bond length between all the four carbon atoms is same in 1, 3 - butadine. Explain with reason.
Answer» SOLUTION :`CH_(2)=CH-CH=CH_(2) harr overset(+)CH_(2)-CH=CH-overset(bar..)CH_(2)` `CH_(2)bar(...)CH bar(...)CHbar(...)CH_(2)-=overset(bar(..))CH_(2)-CH=CH-overset(+)CH_2` (Partial double bond character) `1,3 ` ,3-butadiene is a conjugated MOLECULE with four overlapping p-orbital on adjacent atoms. And A-electrons are delocalised over four atoms. This SHORTENS the bond length of central C bond Thus, the bond length between all the four C-atoms are same in 1,3-butadiene.