Class 11 Exam > Class 11 Questions > For nomenclature of alkenes in the IUPAC syst...
Start Learning for Free
For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).
Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:
- a)The largest chain of carbon atoms is selected.
- b)All of the these.
- c)The suffix ‘ene’ replaces ‘ane’ of alkanes.
- d)Numbering of the chain is done from the end which is nearer to the double bond.
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
For nomenclature of alkenes in the IUPAC system, the longest chain of ...
(i) F or nomenclature of alkenes in IUPAC system. The longest chain of carbon atoms containing the double bond is selected.
(ii) Numbering of the chain is done from the end which is nearer to the double bond.
(iii) The suffix ‘ene’ replaces ‘ane’ of alkanes.
Most Upvoted Answer
For nomenclature of alkenes in the IUPAC system, the longest chain of ...
Nomenclature of Alkenes in the IUPAC System
The IUPAC system is a set of rules used for naming organic compounds. When it comes to naming alkenes, there are specific guidelines to follow. Let's break down the process step by step:
1. Selecting the Longest Chain
- The first step is to identify the longest chain of carbon atoms that contains the double bond.
- This chain forms the backbone of the alkene molecule.
- The double bond takes priority over any other functional groups present in the compound.
2. Numbering the Chain
- Once the longest chain is identified, numbering of the carbon atoms is done.
- The numbering starts from the end of the chain that is closer to the double bond.
- This ensures that the double bond gets the lowest possible number.
3. Replacing the Suffix
- In alkanes, the suffix is "ane." However, in alkenes, the suffix changes to "ene" to indicate the presence of a double bond.
- For example, if the alkane is named "butane," the corresponding alkene would be named "butene."
4. Naming the Substituents
- If there are any substituents attached to the alkene chain, they are named using prefixes such as methyl, ethyl, etc.
- The position of the substituents is indicated by the number of the carbon atom to which they are attached.
5. Naming the Double Bond
- The double bond is indicated by its position in the chain.
- The lower number of the two carbon atoms involved in the double bond is mentioned before the name of the alkene.
- For example, if the double bond is between the second and third carbon atoms, it would be named as "2-butene."
First Member of the Alkene Series
- The first member of the alkene series is CH2, which replaces n by 1 in CnH2n.
- This compound is known as methene. However, it has a very short life and is highly reactive.
- The first stable member of the alkene series is C2H4, which is named as ethylene (common name) or ethene (IUPAC name).
Correct Answer
- The correct statement for the nomenclature of alkenes in the IUPAC system is option 'B.'
- Numbering of the chain is done from the end that is nearer to the double bond. This ensures that the double bond gets the lowest possible number, as per the IUPAC rules.
The IUPAC system is a set of rules used for naming organic compounds. When it comes to naming alkenes, there are specific guidelines to follow. Let's break down the process step by step:
1. Selecting the Longest Chain
- The first step is to identify the longest chain of carbon atoms that contains the double bond.
- This chain forms the backbone of the alkene molecule.
- The double bond takes priority over any other functional groups present in the compound.
2. Numbering the Chain
- Once the longest chain is identified, numbering of the carbon atoms is done.
- The numbering starts from the end of the chain that is closer to the double bond.
- This ensures that the double bond gets the lowest possible number.
3. Replacing the Suffix
- In alkanes, the suffix is "ane." However, in alkenes, the suffix changes to "ene" to indicate the presence of a double bond.
- For example, if the alkane is named "butane," the corresponding alkene would be named "butene."
4. Naming the Substituents
- If there are any substituents attached to the alkene chain, they are named using prefixes such as methyl, ethyl, etc.
- The position of the substituents is indicated by the number of the carbon atom to which they are attached.
5. Naming the Double Bond
- The double bond is indicated by its position in the chain.
- The lower number of the two carbon atoms involved in the double bond is mentioned before the name of the alkene.
- For example, if the double bond is between the second and third carbon atoms, it would be named as "2-butene."
First Member of the Alkene Series
- The first member of the alkene series is CH2, which replaces n by 1 in CnH2n.
- This compound is known as methene. However, it has a very short life and is highly reactive.
- The first stable member of the alkene series is C2H4, which is named as ethylene (common name) or ethene (IUPAC name).
Correct Answer
- The correct statement for the nomenclature of alkenes in the IUPAC system is option 'B.'
- Numbering of the chain is done from the end that is nearer to the double bond. This ensures that the double bond gets the lowest possible number, as per the IUPAC rules.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Similar Class 11 Doubts
Top Courses for Class 11View all
For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer?
Question Description
For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer?.
For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer?.
Solutions for For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For nomenclature of alkenes in the IUPAC system, the longest chain of carbon atoms containing the double bond is selected. Numbering of the chain is done from the end which is nearer to the double bond. The suffix ‘ene’ replaces ‘ane’ of alkanes. The first member of the alkene series is: CH2 (replacing n by 1 in CnH2n) known as methene but has a very short life. The first stable member of the alkene series is C2H4 known as ethylene (common) or ethene (IUPAC).Q. The correct statement/s for nomenclature of alkenes in the IUPAC system is/are:a)The largest chain of carbon atoms is selected.b)All of the these.c)The suffix ‘ene’ replaces ‘ane’ of alkanes.d)Numbering of the chain is done from the end which is nearer to the double bond.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup