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Gadolinium - 153 is used in the detection of osteoporosis disease of bones. Half - life of gadolinium - 153 is 500 days. After how many days, on n average, the nuclide can be considered absent from the body of patients ?
Gadolinium - 153 is used in the detection of osteoporosis disease of bones. Half - life of gadolinium - 153 is 500 days. After how many days, on n average, the nuclide can be considered absent from the body of patients ?
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Solution
The correct option is B Infinite
The radioactive clement will not completely disappear from the body of a patient after infinite time too, because it takes a very long time period to convert a radioactive element, completely in non-radioactive elements, because after 500 days which is a half-life of the given radioactive substance only half of the total amount will convert in its isotope. The remaining substance will again take the period of half-life to convert its half of the portion and so on.
The radioactive clement will not completely disappear from the body of a patient after infinite time too, because it takes a very long time period to convert a radioactive element, completely in non-radioactive elements, because after 500 days which is a half-life of the given radioactive substance only half of the total amount will convert in its isotope. The remaining substance will again take the period of half-life to convert its half of the portion and so on.
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