Answer
424.5k+ views
Hint: In order to know the name of the compound we should be familiar with the rules of nomenclature. We should also have an idea about the structure of the compound. Think about what prefix is added according to the parent alkyl group and the suffix added for the aldehyde functional group.
Complete answer:
The very first step, of naming a compound, is identifying the functional group in the compound. In this case it is aldehyde ($-CHO$). The total number of carbon atoms present in the compound is 3.
So the name of the compound will be having a prefix of prop (due to the presence of 3 carbon atoms). And as per the functional group, it will be ‘al’.
Therefore, the name of the compound is propanal.
The structure of the propanal is given below:
Now, moving on to the second option we have Propanone. There are 3 carbon atoms and the functional group is ketone.
The structure of propanone will be:
This does not resemble the compound mentioned in the question, since there is the presence of a different functional group and also a double bond. So, Option B is not the answer.
The third option is Ethanol. By ‘eth’ we mean 2 carbon atoms. But the compound in the question has 3 carbon atoms, so this does not resemble the answer.
The structure of ethanol:
The last option is ethanal. The name eth signifies 2 carbon atoms, so it cannot be the answer. Moreover, it has got a double bond.
The structure of ethanal is given below:
So, the correct answer is “Option A”.
Note: Remember that the prefix prop- comes from the total number of carbon atoms present in the molecule and not the number of carbon atoms present in the alkyl group attached to the carbon atom. We can also write the formula of propanal as ${{C}_{3}}{{H}_{6}}O$.
Complete answer:
The very first step, of naming a compound, is identifying the functional group in the compound. In this case it is aldehyde ($-CHO$). The total number of carbon atoms present in the compound is 3.
So the name of the compound will be having a prefix of prop (due to the presence of 3 carbon atoms). And as per the functional group, it will be ‘al’.
Therefore, the name of the compound is propanal.
The structure of the propanal is given below:
![seo images](https://www.vedantu.com/question-sets/b04af722-d6a0-4d85-ac62-b1c95983229223127715780260237.png)
Now, moving on to the second option we have Propanone. There are 3 carbon atoms and the functional group is ketone.
The structure of propanone will be:
![seo images](https://www.vedantu.com/question-sets/ea9c89aa-f158-49e2-8f02-e108d4719bbc7569533901994700500.png)
This does not resemble the compound mentioned in the question, since there is the presence of a different functional group and also a double bond. So, Option B is not the answer.
The third option is Ethanol. By ‘eth’ we mean 2 carbon atoms. But the compound in the question has 3 carbon atoms, so this does not resemble the answer.
The structure of ethanol:
![seo images](https://www.vedantu.com/question-sets/e3770acb-e22c-43b3-88aa-d99f3815c3cf7984039750224671996.png)
The last option is ethanal. The name eth signifies 2 carbon atoms, so it cannot be the answer. Moreover, it has got a double bond.
The structure of ethanal is given below:
![seo images](https://www.vedantu.com/question-sets/36f977f1-f056-4b3e-af08-fdad9b356c1e1400160859574228145.png)
So, the correct answer is “Option A”.
Note: Remember that the prefix prop- comes from the total number of carbon atoms present in the molecule and not the number of carbon atoms present in the alkyl group attached to the carbon atom. We can also write the formula of propanal as ${{C}_{3}}{{H}_{6}}O$.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Why Are Noble Gases NonReactive class 11 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let X and Y be the sets of all positive divisors of class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
At which age domestication of animals started A Neolithic class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill in the blanks A 1 lakh ten thousand B 1 million class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)