Estradiol is best described as which of the following? an alkyne an alkene an alkane an aromatic
As an aromatic.
Because it contains a ring with alternated dobule and single bonds where there are delocalized electrons. This ring has the same structure of the phenol (benzende with an OH radical).
Answer:
an aromatic
Explanation:
Estradiol has a fused ring structure with one benzene ring. The benzene ring has 6 pi electrons and a planar structure. Overall estradiol has a planar stricture and 6 pi electrons both of which make it aromatic.  According to Huckel’s rule for aromaticity, estradiol has 4n +2 pi electrons, where n is 1.