Identify the formulas of the given compounds

We compare the number of chlorine atoms in each compound.

A: Gammaxene
Gammaxene is benzene hexachloride (BHC), specifically the $\gamma$-isomer of hexachlorocyclohexane.
Its formula is: $\mathrm{C_6H_6Cl_6}$ Number of chlorine atoms $= 6$

B: Chloropicrin
Chloropicrin is trichloronitromethane.
Its formula is: $\mathrm{CCl_3NO_2}$ Number of chlorine atoms $= 3$

C: Chloral
Chloral is trichloroacetaldehyde.
Its formula is: $\mathrm{CCl_3CHO}$ Number of chlorine atoms $= 3$

D: Freon-12
Freon-12 is dichlorodifluoromethane.
Its formula is: $\mathrm{CCl_2F_2}$ Number of chlorine atoms $= 2$

Compare the number of chlorine atoms

• Gammaxene: $6$
• Chloropicrin: $3$
• Chloral: $3$
• Freon-12: $2$

Find the maximum

The maximum number of chlorine atoms is in Gammaxene.

Correct option

$\boxed{\text{A: Gammaxene}}$

Comparison with stored correct answer

Stored correct answer is A, which matches the derived answer.