Electrophilic addition to alkenes takes the following general form: nuc: = nucleophile E+ = electrophile. Electrophilic addition to alkenes starts with the pi electrons attacking an electrophile, forming a carbocation on the most stable carbon.A nucleophile then attacks the carbocation to form the product. There are many different kinds of such addition, including:lectrophilic addition to alkenes takes the following general form: nuc: = nucleophile E+ = electrophile. Electrophilic addition to alkenes starts with the pi electrons attacking an electrophile, forming a carbocation on the most stable carbon.
Selective auditory attention or selective hearing is a type of selective attention and involves the auditory system of the nervous system.
A hearing test will show the hearing loss that occurs with MÃ©niÃ¨re disease. Hearing may be near normal after an attack. A caloric stimulation test checks your eye reflexes by warming and cooling the inner ear with water. Test results that are not in the normal range can be a sign of MÃ©niÃ¨re disease.