Question

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Answer 1

Radioactive isotopes have many useful applications. In medicine, for example, cobalt-60 is extensively employed as a radiation source to arrest the development of cancer. Other radioactive isotopes are used as tracers for diagnostic purposes as well as in research on metabolic processes.
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Answer 2

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ISOTOPES
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In nature a number of atoms of some elements have been indentified which have the same atomic number but different mass numbers.

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Since the chemical properties of all the isotopes of an element are the same normally we are not concerned about taking a mixture but some isotopes have special properties which find them useful.

◆ An isotope of Uranium is used as a fuel in nuclear reactors

◆ An isotope of Cobalt is used in the treatment of cancer

◆ An isotope of iodine is used in the treatment of goitre

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