Naming review Names of straight-chain alkanes Named according to the number of carbon atoms in the molecule,with the exception of the first four -Names based on Greek numbers Suffix-ane added to identify the molecule as alkane TABLE3.3 Names of Straight-Chain Alkanes Number of Formula Number of Formula carbons(n) Name (CnH2n+2) carbons(n) Name (CnH2n+2) 1 甲 Methane CH4 8 辛 Octane C8H18 乙 Ethane C2H6 9 Nonane CgH20 3 Propane C3Ha 10 癸 Decane C10H22 ￥ 丁 Butane C4H10 11 Undecane C1H24 Pentane CsH12 12 Dodecane C12H26 6 己 Hexane C6H14 20 Icosane C20H42 7 庚 Heptane C7H16 30 Triacontane C30H62 ▪ Names of straight-chain alkanes ▪ Named according to the number of carbon atoms in the molecule, with the exception of the first four ▪ Names based on Greek numbers ▪ Suffix –ane added to identify the molecule as alkane Naming review 甲 乙 丙 丁 戊 己 庚 辛 壬 癸