Question

what is isotopes and their application

Answer 1

Elements with the same atomic number but a different mass number are defined as “Isotopes
Chemical properties
Generally, the chemical properties of isotopes of any element are almost identical. The exception to this case is the isotopes of hydrogen because the numbers of neutrons have a major effect on the size of the nucleus of a hydrogen atom.

Physical properties

The physical properties of isotopes in a particular element vary from each other. This is because the physical properties of any isotope depend on the mass. The mass of each isotope of a single element varies from one another. Processes such as fractional distillation and diffusion are used to separate isotopes from one another. We make use of the fact that isotopes have different physical properties.

Answer 2

Hey mate!
Here is your answer.
ISOTOPE:A number of atoms of some elements have been identified, which have the same atomic number but different mass number.
Application
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 in various fields. Some of them are:
1. An isotope of uranium is used as a fuel in nuclear reactors.
2. An isotope of cobalt is used in the treatment of cancer.
3. An isotope of iodine is used in the treatment of goitre.
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Hope it helps you.
Thanks