(a) There are eighteen isomeric alkanes of molecular formula C8H18. Draw and name any eight of them.
(b) Draw and name the six isomeric cyclopentanes of molecular formula C7H14 . These will include four constitutional isomers, of which two show geometric (cis-trans) stereoisomerism.
Here, we are going to draw the isomers of the following alkane having C8H18.
Step 1: (a)
The alkanes of molecular formula C8H18 is basically Octane. The structure of octane is as follows:
Thus, it gives 18 isomeric forms.2-methylheptane
(C) 2, 3-dimethylhexane
(d) 2, 5-dimethylhexane