Question

Draw the condensed structural formula for each of the following:
a. $cis-1,2-difluoroethene$
b.$trans-2-pentene$
c. $trans-2-heptene$

Short answer

Part(a) Required structure is

Part(b) Required structure is

Part(c) Required structure is

Step-by-step solution

Part (a) Step 1: Given information

We need to draw condensed structural formula of $cis-1,2-difluoroethene$

Part(a) Step 2 : Simplify

The Condensed Structural Formula is a system for writing organic compounds in a single line of text.
We write them in a sort of shorthand notation that contains more information than the chemical formula.
Required structure is

Part(b) Step 1 : Given information 

We need to draw condensed structural formula of $trans-2-pentene$

Part(b) Step 2 : Simplify

The Condensed Structural Formula is a system for writing organic compounds in a single line of text.
We write them in a sort of shorthand notation that contains more information than the chemical formula.
Required structure is

Part(c) Step 1 : Given information 

We need to draw condensed structural formula of $trans-2-heptene$

Part(c) Step 2 : Simplify

The Condensed Structural Formula is a system for writing organic compounds in a single line of text.
We write them in a sort of shorthand notation that contains more information than the chemical formula.
Required structure is