Category Archives: Variable oxidation states (transition metals)

Variable oxidation states (transition metals)

Transition elements show variable oxidation states, as electrons may be lost from energetically similar 4s and 3d sub-levels. Terminology: the oxidation state of the metal in a compound is indicated by a Roman numeral after the name of the metal. So Iron (II) means a compound containing Fe2+ .  Oxidation states of chromium Species Colour Oxidation state of metal K2CrO4

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