Chemistry - Nomenclature Question with Solution | TestHub

Parent chain tridecane (13 C). Two branched substituents on ${\mathrm{C}}_6$ and ${\mathrm{C}}_8$. They are alphabetised by the complete name: both start with 'methylbutyl', so the one with locant 1 comes first. The other options use wrong numbering, the wrong alphabetical order or the wrong parent chain.