Which Carbocation Is Least Stable?
Three Main Factors Increase the Stability of Carbocations: Increasing the Number of Adjacent Carbon Atoms: Methyl (Least Stable Carbocation) < Primary <...
Three main factors increase the stability of carbocations: Increasing the number of adjacent carbon atoms: methyl (least stable carbocation) < primary < secondary < tertiary (most stable carbocation)
Which carbocation is the most stable?
The carbocation bonded to three alkanes (tertiary carbocation) is the most stable, and thus the correct answer. Secondary carbocations will require more energy than tertiary, and primary carbocations will require the most energy.
Why primary carbocation is least stable?
A neighbouring C-H bond will make it more stable by donating some of its electron density into a carbocation's empty p-orbital. ... Primary carbocations are extremely reactive and are not always used as reaction intermediates; they are also less stable with methyl carbocations.
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