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→About Isotopes
===About Isotopes===
: Each [[element]] has many [[isotope]]s but some are [[Stable Isotope|stable]] so they will exist for billions of years and others are [[Unstable Isotope|unstable]] so they [[Radioactive Decay|decay]] quickly into other [[isotope]]s or a different [[element]].
: Different [[isotope]]s of the same [[element]] have the same [[Atomic Number|atomic number]] but different [[Relative Atomic Mass|atomic mass]] due to the different numbers of [[neutron]]s.
: Different [[isotope]]s of the same [[element]] have the same [[Chemical Property|chemical properties]] but they have different [[Physical Property|physical properties]]. This means they cannot be separated by chemical processes but they can be separated by physical ones.