A hydrocarbon with 5 carbons and a double bond between the $2^{n d}$ and the $3^{r d}$ carbons, can be named as ___.

Pentene

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Pent-1-ene

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Pent-2-ene

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Pent-3-ene

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Solution

The correct option is C Pent-2-ene
While naming unsaturated compounds, we consider the number of the least value as the position of the double bond. So in a main chain having 5 carbons with double bond at position 2 is Pent-2-ene.

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A hydrocarbon with 5 carbons and a double bond between the 2nd and the 3rd carbons, can be named as ___.

The correct option is C Pent-2-eneWhile naming unsaturated compounds, we consider the number of the least value as the position of the double bond. So in a main chain having 5 carbons with double bond at position 2 is Pent-2-ene.

A hydrocarbon with 5 carbons and a double bond between the $2^{n d}$ and the $3^{r d}$ carbons, can be named as ___.

The correct option is C Pent-2-ene
While naming unsaturated compounds, we consider the number of the least value as the position of the double bond. So in a main chain having 5 carbons with double bond at position 2 is Pent-2-ene.