Alkanes and Alkane Isomers TABLE 3.2 Number of Alkane Isomers Isomers Number of From the Greek isos meros meaning Formula isomers “made of the same parts” C6H14 Compounds that have the same C7H16 molecular formula but different C8H18 18 CgH20 35 structures C10H22 75 C15H32 4,347 C20H42 366,319 C30H62 4,111,846,763 CH3 CH3 CH3CCH3 CH3CH2CH2CH2CH3 CH3CH2CHCH3 CH3 Pentane,CsH12 2-Methylbutane,CsH12 2,2-Dimethylpropane,CsH Isomers ▪ From the Greek isos + meros meaning “made of the same parts” ▪ Compounds that have the same molecular formula but different structures Alkanes and Alkane Isomers