Why are some isotopes used as tracers

Radioactive  isotopes  and radioactively labeled molecules are  used as tracers  to identify abnormal bodily processes. this is possible because  some elements tend to concentrate (in compound form) in certain  parts of the body – iodine in the thyroid, phosphorus in the bones and potassium in the muscles.

Radioactive isotopes and radioactively labelled molecules are used as tracers to identify abnormal bodily processes. this is possible because some elements tend to concentrate (in compound form) in certain parts of the body – iodine in the thyroid, phosphorus in the bones and potassium in the muscles.

What is the question? if you were looking to design a method of separating something, you can separate this compound by putting both in water and allowing the water to dissolve the sugar. then pour it into another beaker and evaporate it then boom! salt and sugar : )