Determine the systematic name of the molecule.

• A. ortho-fluoroisopropylbenzene
• B. para-fluoroisopropylbenzene
• C. meta-fluoroisopropylbenzene
• D. 1-fluoro-2-tert-butylbenzene

Answer: (A)

Verified step by step guidance

1. Identify the parent structure, which is a benzene ring in this case.
2. Locate and name the substituents attached to the benzene ring. Here, there is a fluorine atom (F) and an isopropyl group (a carbon attached to two methyl groups).
3. Number the benzene ring to give the substituents the lowest possible numbers. Assign position 1 to the fluorine atom since it is a halogen and can be considered a priority substituent.
4. Determine the position of the isopropyl group relative to the fluorine. The isopropyl group is attached to the carbon adjacent to the fluorine, which corresponds to position 2 on the ring.
5. Name the compound using the systematic nomenclature: '1-fluoro-2-isopropylbenzene'. Alternatively, use the common naming system for disubstituted benzenes where substituents at positions 1 and 2 are called 'ortho', so the name can be 'ortho-fluoroisopropylbenzene'.