Question

Selected bond angles for six hydrocarbons are shown below. Arrange these hydrocarbons accroding to their `pK_(a)` values, from the lowest to the highest.

A. `VltVIltIIltIIIltIV`
B. `IVltIltIIltIIIltVltVI`
C. `IIltIVltIltVIltVltIII`
D. `IltVltIVltIIIltIIltVI`

Answer 1

Correct Answer - D

most acidic ring is aromatic after derotonation.
H-C-=C-H is next most acidic compound because characters are hight

is least acidic because anion is anti aromatic and reaming compounds are arrange on the basis of % s charcters.