The diagram shows the structural formula of benzene. the empirical and the molecular formulas of benzene are, respectively -
f ch, c2h2
g ch, c3h3
h c3h3, c6h6
j ch, c6h6

                     Empirical Formula  =  CH

                    Molecular Formula =  C₆H₆

Explanation:

                   The structure of benzene is attached.

It can be easily seen from the structure of benzene that it contains six carbon atoms and six hydrogen atoms. Therefore, one should remember that the structure formula is made up of molecular formula as it contains and show the exact number of atoms. Hence, we can finalize the molecular formula as C₆H₆ on the basis of inspecting the structure formula.

Secondly, the empirical formula is calculated from the molecular formula. It does not depend upon the structure formula of a compound. As empirical formula is the simplest positive integer ratio of atoms present in a compound hence for benzene we can calculate this formula as CH because the simplest ratio of 6:6 is 1:1.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.