Question
Nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. An external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body. Cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. One hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment. 82 State one risk to human tissue associated with the use of radioisotopes to treat cancer. [1]HIGHLIGHT TO SEE THE ANSWER
83 Compare the penetrating power of the two emissions from the Co-60. [1] HIGHLIGHT TO SEE THE ANSWER
84 Complete the nuclear equation in your answer booklet for the beta decay of the Co-60 by writing an isotopic notation for the missing product. [1]
HIGHLIGHT TO SEE THE ANSWER
85 Determine the total time that will have elapsed when 12.5 grams of the original Co-60 sample at the hospital remains unchanged. [1] HIGHLIGHT TO SEE THE ANSWER
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