Which is more stable Ethyl carbocation or Neopentyl carbocation?
In that case ethyl carbocation has two alpha hydrogen atoms as CH2 is bonded to C+.And in case of neopentynyl carbocation CH3 is attached to C+ .more alpha hydrogen atoms ,more hyperconjugative structures,and more stability.and there are three donating groups in neopentynyl carbocation.these may be the reasons