What is the result of placing a manually processed radiograph in the fixer solution before the developer solution?

Placing a manually processed radiograph in the fixer solution before the developer solution effectively results in a blank film. This occurs because the fixer solution contains chemicals designed to remove unexposed silver halide crystals from the film emulsion. If the film is placed in the fixer first, it will remove any latent image that may have been produced during exposure to radiation.

In the proper film processing sequence, the developer is meant to convert the latent image on the unexposed film into a visible image. However, since the fixer acts to clear the film of any residual unexposed materials, exposing the film to the fixer before the developer interrupts this critical process, leading to a film that appears clear or blank, with no discernible image.

The other outcomes listed typically arise from different processing errors. A dark film may result from overdevelopment or improperly diluted developer, a faint image generally arises from underdevelopment or insufficient exposure to radiation, and a fogged film can be caused by exposure to light or improper storage of the film before processing.