The IUPAC name of the compound CH ₃- CH ₂- C ( CH ₃)₂- CH ₂- CH ( CH ₂ CH ₃)- CH ₂- CH ₃ is :

Step-by-step solution

The longest continuous carbon chain contains 7 carbon atoms, so the parent alkane is heptane. The substituents are one ethyl group and two methyl groups. Numbering from left to right gives the locants 3, 3, 5 for the substituents. Numbering from right to left gives the locants 3, 5, 5. According to the lowest locant set rule, the set (3, 3, 5) is preferred over (3, 5, 5) at the first point of difference. While writing the name, substituents are arranged in alphabetical order. 'Ethyl' comes before 'methyl' (ignoring