Question

ch3-ch=ch2 find the IUPAC name by steps​

Answer 1

Answer:

Explanation:

First count the number of carbons. Next, look whether there is any functional group or not.uf yes, it's name will be attached at the end of IUPAC name.

If there are two or more,here the order of priority of functional groups comes in, and you have to give the numbering of carbon according to the priority of functional groups.

Next ,look if there are any double or triple bonds. Because ,numbering of carbons should be done in a way that the top priority functional group or the multiple bonds( if either of them are present) should get the least numbered Carbon

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In this case CH3-CH=CH2 , there is no functional group, but there is a double bond which should be given a priority when named. When numbered from the right side,the double bond is between 2nd and 3rd carbon. But when it is numbered from left side it will be between 1st and 2nd carbon. According to IUPAC rule the priority group should be numbered in a way that it gets least carbon number. So, its from left side that it gets number 1.

There are 3 carbons which means prop and there is a double bond which means alkene.

Hence ,it is prop-1-ene

Or it can be written as 1 - propene also.Both are valid