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le QCM fétiche de gantet


exosquelette
Go to solution Solved by carolineb,

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  • Solution

@exosquelette coucou! ce qui l'a rend vraie est que (dans le tableau que tu as normalement plus haut), le Xenon (ayant une masse + élevée) va pouvoir se désintégrer en Iode (c'est ce que signifie la flèche) mais ça ne veut pas dire qu'ils ont le même numéro atomique 

 

(à confirmer quand même)

 

Edited by carolineb
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