Give the applications of strontium with respect to nuclear chemistry

Explanation

`.^(90)Sr` is used in cancer therapy
`.^(87)Sr//^(86)Sr` ratios are commonly used in marine investigations as well as in teeth, tracking animals migrations or in criminal forensics.
(iii) Dating of rocks.
(iv) As a radioactive tracer in determining the source of ancient archaeological materials such as timbers and coins.