Isotopes
Atoms are held together by strong nuclear force.
The strong neuclear force has a limit, on how many neutrons and protons it can keep together.
Once the number of neutrons or protons increase more than how many strong neuclear force can handle, an atom becomes unstable.
When an atom becomes unstable, it emmites out neutrons and protons, resulting in radiation.
Unstable atoms are called radioactive.
Isotopes have different physical properties, like melting point and density.
Isotopes of a same atom has the same chemical properties, because chemical properties are based on electrons.
Types of isotopes
Uses of isotopes
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Atomic number of a nucleus is Z and atomic mass is M.Find the number of neutrons.
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