why a compound like Carbon di oxide chemical formulae is written as Co² not Oc²
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write first less electronegative element first then more electronegative
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because the valency of carbon is 4 and that of oxygen is 2 and by Criss cross method the formula obtained will be CO2 it can also be written as o2c but generally electronegative element is written on the right side
shikha86:
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