The structural formula of a dioxin is shown below.

What is its empirical formula?

A.     \({{\text{C}}_{\text{6}}}{\text{O}}\)

B.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{4}}}{\text{O}}\)

C.     \({{\text{C}}_{\text{6}}}{{\text{H}}_{\text{6}}}{\text{O}}\)

D.     \({{\text{C}}_{{\text{12}}}}{{\text{H}}_{\text{8}}}{{\text{O}}_{\text{2}}}\)

B

Some teachers were worried about the use of a skeletal formula for the benzene ring. Certainly skeletal formulas are not on the syllabus but the benzene ring is.