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Chemistry 121, Winter 2008, LA Tech
Examples of Alkanes, Alkenes,  Alkynes and Arenes:
ethane ethene ethyne         benzene
C2H6 C2H4 C2H2 C6H6
CnH2n+2 CnH2n CnH2n-2       CnHn
  saturated unsaturated unsaturated  Aromatic
alkane alkene alkyne           Arene