Răspuns :
Alcanii sunt hidrocarburile saturate aciclice .
Ex.:CH4 ;C2H6 ;C3H8 ,etc.
CH4 metan
CH3-CH3 etan
CH3-CH2-CH3 propan
CH3-CH2-CH2-CH3 butan
CH3-CH2-CH2-CH2-CH3 pentan etc.hexan,heptan, octan,nonan,decan
CH3-CH3 etan
CH3-CH2-CH3 propan
CH3-CH2-CH2-CH3 butan
CH3-CH2-CH2-CH2-CH3 pentan etc.hexan,heptan, octan,nonan,decan