Question

2 etil-3, 4 dimetilnonano

Answer 1

            CH2-CH3
₁         ₂Ι        ₃      ₄        ₅         ₆        ₇          ₈         ₉
CH3 - CH - CH  - CH - CH2 - CH2 - CH2 - CH2 - CH3
                   Ι         Ι
                   CH3  CH3