What are the four types of nerve agents?

The four types of nerve agents are classified as organophosphorus compounds, and they specifically include Tabun (GA), Sarin (GB), Soman (GD), and VX. These agents are known for their potency and the way they disrupt the normal functioning of the nervous system by inhibiting the enzyme acetylcholinesterase, leading to an accumulation of acetylcholine. This causes overstimulation of muscles, glands, and the central nervous system.

Tabun, Sarin, and Soman are among the first nerve agents developed and have been utilized in warfare and toxicological incidents. VX stands out as one of the most potent nerve agents known, with a high degree of toxicity even in minute quantities. The recognition of these four agents is critical for understanding chemical warfare and for the development of protective measures and antidotes.

The other options contain chemical agents, but they do not represent the primary classifications of nerve agents. For example, chlorine and phosgene are primarily classified as choking agents, while mustard gas and Lewisite fall into the category of blister agents. Thus, the identification of the correct nerve agents is fundamental to understanding chemical warfare and the potential implications for military personnel and civilians alike.