Which of the following is NOT a type of chemical munition?

Chemical munitions are specifically designed to use chemical substances to cause harm or incapacitation. Nerve agents, blister agents, and psychochemical agents all fall within the realm of chemical agents, as they are designed to disrupt biological processes, cause physical harm, or induce psychological effects through chemical means.

Nerve agents, like sarin and VX, interfere with the nervous system and can be highly lethal. Blister agents, such as mustard gas, cause severe blisters and damage to the skin and lungs upon exposure. Psychochemical agents, while less commonly discussed, are designed to affect mental states and behavior through chemical means.

In contrast, radiological agents involve radioactive materials rather than chemical substances. These types of agents are not classified as chemical munitions because their effects are primarily due to radioactive decay and exposure rather than direct chemical interaction. This distinction makes "radiological agents" the correct answer for the question, as it does not fit within the category of chemical munitions.