A hydrocarbon with five carbon atoms and a double bond between the second and the third carbon atom is named as .

pent-2-ene

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pent-3-ene

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hept-2-ene

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hept-3-ene

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Solution

The correct option is A pent-2-ene
$∙$ The root word of this compound is 'pent' as there are five carbons in the parent chain.

$∙$ Since there is a double bond present between second and the third carbon, the suffix is 'ene'.

$∙$ Thus, the name of the compound becomes pent-2-ene.
It is represented as $C H_{3} - C H = C H - C H_{2} - C H_{3}$ .

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