Doctors use the radioactive isotope chromium-51 to label red blood cells in the human body. Chromium-51 gives off relatively ______ alpha particles that can be stopped by _______

Respuesta :

harmless, a sheet of paper
Alpha particles do not possess a high amount of energy and are not very ionizing, since they have a high mass. This makes them relatively safer to work with.

Answer:

weak; a piece of paper

Explanation:

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