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.
Hearing impairment can also include muffled hearing and distorted hearing. Hearing impairment, also called hearing loss is a symptom or result of a variety of diseases, disorders and conditions. The ear includes three areas: the outer ear, middle ear and inner ear. Sound waves travel through the outer ear, into the middle ear where they cause vibration of the tympanic membrane.