Answer : The structural formula of 4-ethyloctane is shown below.
Explanation :
Structural formula : In the structural formula, the bonding and type of bonds which holds the atoms in molecule together are shown.
The given name of compound is, 4-ethylocatne.
A suffix '-ane' present at the end of the name represent the alkane group.
For the number of carbon atom, we use prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.
In this compound, the parent chain is 8 membered and a substituent ethyl is present at 4th position of the parent chain.
Thus, the structural formula of 4-ethyloctane is shown below.
