Iniesta Posted December 3, 2019 Share Posted December 3, 2019 Bonjour à tous Comment sait-on que le Ruthénium-99 est l’isobare stable du Molybdène-99 Le lien de l’annale (C’est le QCM 8 item C) https://tutoweb.org/tat_librairie/Purpan/Annales de Concours/S1/S1 - Concours Purpan 2016-2017.pdf Merci d’avance Quote Link to comment Share on other sites More sharing options...
Solution lemon Posted December 3, 2019 Solution Share Posted December 3, 2019 (edited) salut ! en comparant les uma de chaque élément, tu peux voir que le ruthénium est celui qui a la plus petite uma, c'est donc le plus stable parmi cette liste. Donc ensuite, il suffit juste de comparer le nombre de neutrons entre ces deux éléments ! dis moi si tu as compris Edited December 3, 2019 by lemon Quote Link to comment Share on other sites More sharing options...
Iniesta Posted December 3, 2019 Author Share Posted December 3, 2019 Yes super merci je cherchais trop compliquée mdrr Quote Link to comment Share on other sites More sharing options...
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