These three groups are listed in our workbook. I don't know the answer and our teacher isn't sure either:
(each has a free valency through which it is attached to a benzene ring):
Now, I've read and understood this question - How does hyperconjugation lead to the directing properties of alkyl group? Therefore, I think that the groups 2,3 are deactivating (due to -I effect of fluorines and chlorines) yet o/p directing due to hyperconjugation with the H atom. On the other hand, the first group should be meta directing since it has only -I effect and no +/-M or hyperconjugation.
I googled for the complete list of directing groups but I could not find these types of groups.
Is my reasoning - and hence answer - correct? Or is there another answer, and why?