In CH2=C=CH2
it is given that the length between H of first carbon at top and H of last carbon at top is L1 and length between H of first carbon at top and H of last carbon at bottom is L2.
what is the relation between L1 and L2?
Ans) L1=L2
Due to steric hindrance....the hydrogens of carbon 1 and hydrogens of carbon 2 are not in same plane!! but the length will be same!