Question

How many structural isomers of c5h12 r possible?

Answer 1

There are 3 isomers for C5H12.

They are:

1) n-pentane
2) iso-pentane ( 2-methyl butane)
3) neo-pentane ( 2,2-dimethyl propane)

NOTE:
For the 2nd and 3rd, the IUPAC names are written in brackets.