January 2021 1 114 Report
Bonjour j'ai besoin d'aide svp!
place les nombres corrects devant les formules des atomes et des ions.
a) Fe +....... H±  --->    Fe²+ + H²
b) .......  ......Al + ........H± ----> 2 Al³ + 3H²
c) Zn + ........  ......... H± -------> H² + Zn²±
d) Fe³ + .......  .......HO-   ------>    Fe (OH)³
merci d'avance :)
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