Question

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 _______

Answer 1

weak; a piece of paper

Step-by-step explanation:

usatestprep

Answer 2

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.