Proposed numbering schemes for 3-chloro-4-ethylhexane

For the compound shown above, which name (3-chloro-4-ethylhexane or 4-chloro-3-ethylhexane) is correct? Do we need to first look for the minimum number set, and check alphabetical priority only if there is a tie for numbers?

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    $\begingroup$ According to the 2013 IUPAC recommendations, in the name, you need to order the substituents in alphabetical order. Hence x-chloro-y-ethylhexane. Since the locant set (3,4) is the same no matter which direction you number in, the lower locant is assigned to the substituent which is cited first in the name, i.e. chloro, hence 3-chloro-4-ethyl. There is no rule that halogens have priority over alkyl groups. Hence, in the fluoro analogue (for example) it would be 3-ethyl-4-fluoro because ethyl is cited first in the name. $\endgroup$ – orthocresol Jan 9 at 17:14
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    $\begingroup$ Related: Order of citation of alkyl and halide prefixes in IUPAC names $\endgroup$ – Loong Jan 9 at 17:16
  • $\begingroup$ @orthocresol :Do you mean the order given in the given link has some mistake? or i construed it wrongly? Here alkyl is shown high in priority to alkyl and halogens.chemistry.stackexchange.com/questions/22159/… $\endgroup$ – Nandakumar U K Jan 12 at 2:11
  • $\begingroup$ Well, yes: it isn’t a mistake in the sense that the order is wrong or that two things should be switched, but it’s a mistake in the sense that the IUPAC rules for prefixes simply don’t have a priority order like that. $\endgroup$ – orthocresol Jan 12 at 15:27

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