"Oxidation states (oxidation numbers)" http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html oxidation states http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html Chemguide: Oxidation States; Jim Clark; 2002 http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html "Oxidation states (oxidation numbers)" Redox chemistry quoted Vanadium as illustrations Chem Guide: Estados de oxidación (números de oxidación) http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html Chemguide http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html Full article >>> ChemGuide OS tutorial „Oxidation states (oxidation numbers)“ http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html its oxidation state has gone down http://www.chemguide.co.uk/inorganic/redox/oxidnst... ChemGuide OS tutorial its oxidation state has gone down http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html ChemGuide OS tutorial http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html “Oxidation states (oxidation numbers)” oxidation states the "rules" for assigning oxidation numbers oxidation states http://www.chemguide.co.uk/inorganic/redox/oxidnstates.html