Question

Radioisotopic technique was used to prove some facts

Answer 1

Isotopic labeling (or isotopic labelling) is a technique used to track the passage ... An isotopic tracer, (also "isotopic marker" or " isotopic label"), is used in chemistry

Answer 2

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Science and industry use radioisotopes in a variety of ways to improve productivity and, in some cases, to gain information that cannot be obtained in any other way.

Sealed radioactive sources are used in industrial radiography, gauging applications, and mineral analysis