"The Oxidising Ability of the Group 7 Elements" The Oxidising Ability of the Group 7 Elements VIIA apakšgrupas elementu oksidētspēja The Oxidising Ability of the Group 7 Elements (The Halogens) "The Oxidising Ability of the Group 7 Elements" The Oxidising Ability of the Group 7 Elements VIIA apakšgrupas elementu oksidētspēja