izotopi

izotopi

Two or more varieties of the same chemical element. Isotopes have different masses because they have different numbers of neutrons (for example ¹⁸O and ¹⁶O), thus they have different physical and chemical properties. Unstable isotopes undergo radioactive decay.

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Categorie: Ştiinţa planetelor
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The random movement (spreading) of molecules from regions of highest concentrations to regions of lowest concentrations.

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