Question

Give IUPAC names for each of the following alkanes and cycloalkanes:

1. 
   
2. ${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_3$
   
3. 
   
4. 

Short answer

IUPAC name of given compounds are:

(a) Pentane:

(b) Ethane: ${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_3$

(c) Hexane:

(d) Cycloheptane:

Step-by-step solution

Part(a) Step 1: Given Information

We need to give IUPAC name of following compound:

Part (a) Step 2: Explanation

As the given compound contains $5$carbon atoms in straight chain and all are single bonds. So compound is alkane with five carbon atom. Hence, IUPAC name of compound is pentane.

Part(b) Step 1: Given Information

We need to give IUPAC name of following compound:${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_3$

Part (b) Step 2: Explanation

As the given compound contains $2$ carbon atoms in straight chain and all are single bonds. So compound is alkane with two carbon atom. Hence, IUPAC name of compound is ethane.

Part(c) Step 1: Given Information

We need to give IUPAC name of following compound:

Part (c) Step 2: Explanation

As the given compound contains $6$ carbon atoms in straight chain and all are single bonds. So compound is alkane with six carbon atom. Hence, IUPAC name of compound is hexane.

Part(d) Step 1: Given Information

We need to give IUPAC name of following compound:

Part (d) Step 2: Explanation

As the given compound contains $7$carbon atoms in closed ring structure and all are single bonds. So compound is cycloalkane with seven carbon atom. Hence, IUPAC name of compound is cycloheptane.