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.
Sensorineural hearing loss is hearing loss due to damage to the hair cells of the organ of Corti or to the auditory part of the vestibulocochlear nerve. Tinnitus is ringing or buzzing in the ears. Vertigo is the illusion of movement. Nystagmus is a to-and-fro movement of the eyes.