8. Explain with examples (1) Atomic number, (ii) Mass number.
(iii) Isotopes and iv) Isobars. Give any two uses of isotopes.
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The atomic number is the number of protons in thr neucleus of an atom.
The mass number also known as atomic mass number is the total number of protons and neutrons in an atomic nucleus.
isotopes are atoms with the same number of protons but different number of neutrons.
isobars are defined having a same number of nucleons.
the two uses of isotops are:
×used for the development of cancer
×others are used for tracers diagnostic purposes
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