Question

Convert each of the following line-angle formulas to a condensed structural formula and give its IUPAC name: ($11.3$)

a.

b.

Short answer

(a) The required condensed structural formula is ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{CH}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$ and IUPAC name is$4-Methylhep\tan e$

(b) The required condensed structural formula is ${\mathrm{CH}}_3-\mathrm{CH}\left(\mathrm{Cl}\right)-\mathrm{CH}\left({\mathrm{CH}}_3\right)-\mathrm{CH}\left(\mathrm{Br}\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_3$and the IUPAC name is$4-bromo-2-chloro-3-methylhexane$

Step-by-step solution

Part (a) Step 1: Given information 

We need to find the condensed formula and IUPAC name of the given line angle formulas i.e.

Part (a) Step 2: Explanation 

We know that

The Condensed structural formula represents each element's symbol and the bond between each element

Therefore, The required condensed structural formula is

${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{CH}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

And IUPAC name is the name that is accepted worldwide.

So, The IUPAC name is$4-methylpen\tan e$

Part (b) Step 1: Given information 

We need to find the condensed formula and IUPAC name of the given line angle formulas i.e.

Part (b) Step 2: Explanation  

We know that

The Condensed structural formula represents each element's symbol and the bond between each element

Therefore, The required condensed structural formula is

${\mathrm{CH}}_3-\mathrm{CH}\left(\mathrm{Cl}\right)-\mathrm{CH}\left({\mathrm{CH}}_3\right)-\mathrm{CH}\left(\mathrm{Br}\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

And IUPAC name is the name that is accepted worldwide.

So, The IUPAC name is$4-bromo-2-chloro-3-methylhexane$