Question

give the structural isomerism and position isomerism of pentene . 2 mk ​

Answer 1

Answer:

There are three isomers of pentene: 1-pentene, cis-2-pentene, and trans-2-pentene. An isomer is when a compound has the same chemical structure but the atoms are arranged differently. Pentene isomers include one with the double bond at carbon 1 and two with the double bond at carbon 2. The first of our three isomers, 1-pentene, has a double bond at the first carbon.

You may stop and say, ''But what about the double bond at carbons 3 and 4?'' If we look at these molecules, we'll see that they're exactly the same as the double bonds at carbons 1 and 2, just flipped around. So these are not isomers since they're technically the exact same molecule. And since we're supposed to name molecules using the number system with the lowest numbers, they are named 1-pentene and 2-pentene.

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