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Concours 2016


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Posted

Bonjour je ne comprend pas pourquoi l'item C du QCM 2 du concours 2016 de chimie est impossible ...

 

Pouvez vous m'aider ? 

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Posted

Salut @medecine_02!

C'est tout simplement parce que n = 5 et l = 3 correspond à la sous-couche 5f. Et avec l'Ag tu as juste rempli la 5s tu es encore loin de la 5f

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