/ Quick chemistry question
Ionic charge is represented Element(n)+/- e.g Mg2+
But if it's oxidation state, say Mg in MgO it becomes Mg+2 O-2
Basically. If it's a ionic charge, you put the numeric value followed by positive/negative? But if it's oxidation state you put +/- followed by value?
is this correct? Sounds stupid but it's the sort of stuff you lose marks for.
Basic idea is right
Oxidation state is just what you imagine the charge would be if it was ionic (normally, I imagine this is a level so just take this as given)
You're right on the nomenclature otherwise.
For oxidation states you can often not bother with +/- at all, so for Iron 2+ or 3+ ions, we can use Fe(II) or Fe(III) as we know that only the positive forms exist. The roman numerals are just convention. This makes things alot easier as it gets more complicated.
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