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An illustration shows methyl, primary, secondary, and tertiary carbocations in order of increasing stability. Methyl carbocation has a central carbon atom with a positive charge bonded to three hydrogen atoms. Primary carbocation has a central carbon atom with a positive charge bonded to two hydrogen atoms and an alkyl group, R. Secondary carbocation has a central carbon atom with a positive charge bonded to a hydrogen atom and two alkyl groups, R. Tertiary carbocation has a central carbon atom with a positive charge bonded to three alkyl groups, R. The alkyl groups in all structures are outlined in green.
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Directions: Click the "Next" button below to access an interactive drag and drop version of this graphic, which will help reinforce the concepts you have been studying.

An illustration shows methyl, primary, secondary, and tertiary carbocations in order of increasing stability. Methyl carbocation has a central carbon atom with a positive charge bonded to three hydrogen atoms. Primary carbocation has a central carbon atom with a positive charge bonded to two hydrogen atoms and an alkyl group, R. Secondary carbocation has a central carbon atom with a positive charge bonded to a hydrogen atom and two alkyl groups, R. Tertiary carbocation has a central carbon atom with a positive charge bonded to three alkyl groups, R. The alkyl groups in all structures are outlined in green.
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