Oxidation states 0.0 / 5 ? ChemistryRedoxASEdexcel Created by: lucywolfpCreated on: 18-09-16 11:40 What is flourine's oxidation number? -1 1 of 8 What is oxygen's oxidation number? -2 (except in peroxides and compounds with flourine) 2 of 8 What is chlorine's oxidation number? -1 (except in compounds with oxygen and flourine) 3 of 8 What is a disproportionation reaction? A reaction where the same element is both oxidised and reduced (its oxidation number increases and decreases) 4 of 8 What is an oxidising agent? A chemical reagent that can oxidise other atoms by taking electrons away from them (it is reduced) 5 of 8 What is the most positive oxidation number for each atom? The most positive oxidation number for each element is the same as the number of electrons in the outer shell of that atom 6 of 8 What is a redox reaction? A reaction where at least one element changes to a more positive oxidation state and anouther changes to a less positive oxidation state 7 of 8 When 2 atoms are covalently linked which has the negative oxidation state? The most electronegative atom has the negative oxidation state 8 of 8
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