Oxidation States of Various Elements

Can you name the oxidation states of arious elements in complexes?

ComplexOxidation stateOverall charge
Nickel in nickel EDTA0
Vanadium in ammonium metavanadate0
Sodium in sodium hydroxide0
Manganese in manganese dioxide0
Carbon in diaquahydrogencarbonate1+
Cobalt in trichlorocobaltAte0

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