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QuestionChemistry

Spell out the full name of the compound: 3 -methyl- 2 -pentene.
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Step 1:
: Recall the rules for naming a compound.

In organic chemistry, the name of a compound consists of two parts: the name of the alkyl group (also known as the substituent) and the name of the parent chain. The alkyl group is named as a derivative of an alkane, with the suffix -ane replaced by -yl. The parent chain is named based on the longest continuous chain of carbon atoms in the molecule.

Step 2:
: Identify the alkyl group and the parent chain.

In the compound 3 -methyl- 2 -pentene, the alkyl group is methyl, and the parent chain is pentene. The name pentene indicates that there are 5 carbon atoms in the parent chain.

Step 3:
: Identify the location of the alkyl group and the double bond.

The location of the alkyl group and the double bond is indicated by the numbers 3 and 2, respectively. This means that the methyl group is attached to the third carbon atom in the parent chain, and the double bond is between the second and third carbon atoms.

Step 4:
: Write out the full name of the compound.

The full name of the compound is 3 -methyl- 2 -pentene.

Final Answer

The full name of the compound is 3 -methyl- 2 -pentene.