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.
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