
Similarly, do this task based on the diagram, as same as the previous task about ionic compounds.
This is the process of rusting that is very often occurred in the daily life.
Be careful, although iron is a metal from the VIIIB group, its oxidation number are +2 and +3.
So that, don't draw all valence electrons of iron, just the number of electrons used in the process.
Draw a conclusion after finishing your explanation.
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