Of those twelve, only methyl bromide and neopentyl bromide could not possibly be derived by the addition of HBr--Markovnikov or non-Markovnikov--to an alkene of the appropriate structure. 1  For each of the other ten alkyl bromides, determine: 2  which ones could be formed by the Markovnikov addition of HBr to an alkene.
Electroconvulsive therapy (ECT) is a treatment for certain mental illnesses. During this therapy, electrical currents are sent through the brain to induce a seizure. The procedure has been shown to help 78 percent of people with clinical depression.
ECT is most often used as a âtreatment of last resortâ for the following disorders: 1  bipolar disorder: This mood disorder is characterized by periods of intense energy and elation (mania) followed by severe depression. 2  major depressive disorder: This is a common mental disorder.n bilateral ECT, electrodes are placed on either side of the head. The treatment affects the entire brain. In unilateral ECT, one electrode is placed on the top of the head. The other is placed on the right temple. This treatment affects only the right side of the brain.