1.
a)
CH3
CH3-CH2-C-CH2-CH3 , 3-etil-3-metilpentan
CH2
CH3
b)
CH2-CH2-CH3
CH3-CH2-CH----C
CH3 CH2
CH3 , 4-etil-3-metilheptan
2.
Izomerii pentru C7H16 = heptan
CH3-CH2-CH2-CH2-CH2-CH2-CH3
CH3-CH-CH2-CH2-CH2-CH3
CH3
CH3-CH2-CH-CH2-CH2-CH3
CH3
CH3
CH3-C---CH2-CH2-CH3
CH3
CH3
CH3-CH---CH-CH2-CH3
CH3
CH3
CH3-CH---CH2-CH-CH3
CH3
CH3
CH3-CH2-C--CH2-CH3
CH3
CH3
CH3-C-------CH-CH3
CH3 CH3