P2.7

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physics Notiz am P2.7, erstellt von sophiestone23 am 22/05/2013.
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Notiz von sophiestone23, aktualisiert more than 1 year ago
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Erstellt von sophiestone23 vor mehr als 11 Jahre
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Zusammenfassung der Ressource

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an unstable nucleus becomes more stable by emitting an alpha or a beta particle or a gamma radictiation. 

an alpha particles consist of two protons and two neutrons.  When an unstable particle emits an alpha particle , its atomic number goes down by 2 and its mass goes down by 4. 

Beta radiation is ionising radiation from space from devices such as x rays 

nuclear reactions

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