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Annale Purpan


Go to solution Solved by Sashounet,

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Posted (edited)

Hey !!

il y a 24 minutes, _Tantine_ a dit :

Hello, je n'arrive pas a résoudre un item (le B) et il n'y a pas la correction. 

https://zupimages.net/viewer.php?id=21/19/3i4v.png

Merci 😄 

PS : Il est juste

n.o de GeO = 0 (Il faut connaitre n.o Oxygene = -II ) et n.o ( GeO ) = 0 car c'est une molecule sans charge, donc n.o Ge = +2

Ensuite on a Ge seul (non chargé donc il a un n.o de 0)

Enfin GeO2 on a un n.o total de 0, GeO2 = 0 sachant qu'O2 c'est un n.o de -II × 2 donc -IV, il faut par consequent que Ge ait un n.o de +IV pour la neutralitĂ©

Est-ce plus clair ? ^^

Edited by Sashounet

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