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.