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Annales 2023


PEPETTE
Go to solution Solved by hugocrypte,

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il y a 50 minutes, PEPETTE a dit :

Salut les tuteurs, je ne comprends pas bien la correction du troisième item du QCM1 du concours blanc 

Pourquoi on ne remplie pas f...

 

https://zupimages.net/viewer.php?id=22/49/rqy3.png

 

Merci

Salut @PEPETTE, Si tu suis la règle de Klechkowski : tes orbitales 4d et 5p se remplissent avant ton orbitale 4f.

1 s2

2 s2 p6

3 s2 p6 d10

4 s2 p6 d10 f 0

5 s2 p3.

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