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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Fagområde/Domene Astronomy
Category: Planetary science
Company: PSRD
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Fagområde/Domene Geography Category: Countries & Territories

Sveta gora

Greek mountain and pilgrimage site, known as the birthplace of early Christian Orthodox monasticism, housing around 20 Eastern Orthodox monasteries. ...