Question

how would you name the following compounds?
1. CH3-CH2-CH2-CL 2.H2C=CH2
3. CH3-CH2-CH2-CH2-C=C-H

Answer 1

1. 1 - chloro butane

Answer 2

$\textbf{ANSWER}$

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RULES

1▪ Take the longest chain as and give it parent name .

2▪ If substituents are attached Number the chain from the side , where the substituents get the lowest possible number .

3▪ If two or more substituents are attached number the chain from the side where substituent gets the lowest number

4▪ Name the compounds in such a way that the names of substituents are written in alphabetical order

5▪ If two or more same substituents are attached repeat the number of that carbon and write the prefix di , tri , tetra .

Remember that double and trople bond has priority over substituent , means double and triple bond will be given lowest possible number

Now

$\textbf{NAMING THE ABOVE GIVEN COMPOUNDS }$

1▪ CH3_ CH2_CH2_Cl

1_Chloropropane

2▪ CH2 double bond CH2

Ethene (as there are two carbons and double bond so two carbon compund with double bond is ethene)

3▪ CH3_CH2_CH2_CH2_C double bond CH

Hexene (six carbon compound with double bond is Hex +ene means hexene)

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