Do halogens get priority in numbering?

[Chem_Mod]

Do halogens not get priority in numbering (after double and triple bonds) over other substituents in molecules?

[Chem_Mod]

Yes and No because it's by alphabetical order.

[KatelinSnyder 3b]

Does this mean that halogens and alkyl groups have the same priority when deciding the order? or do you consider the alphabetical order of halogens and then alkyl groups?

[Chem_Mod]

The highest priority is to get the lowest number on the suffix group (like -ol for an alcohol or -oic acid for a carboxylic acid). After that, the next priority is to have low numbers on double/triple bonds. Last in priority ranking is having low numbers on prefix groups. Since alkyl groups and halogens are ALWAYS prefix groups, they do not get a high priority, and all prefix groups are otherwise considered equal. This means that bromo- would precede ethyl- on basis of alphabetical order and thus if there were a choice, bromo- would receive the lower number.