Definition
* Atom of the same element> same proton number
> different nucleon/neutrons number
* Same chemical properties
* Different physical properties
Example of Isotopes/Radio Isotopes
Cobalt 60 kill cancerous cells
Gamma ray destroy bacteria/infertile animal
Carbon 14 carbon dating(archeology)
Phosphorus 32 determine intake of fertilizer in plants
Sodium 24 detect pipe leakages/blood clot
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