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A certain element E in Period 2 or 3 of a main-block group forms a compound with oxygen that reacts in the following way with water at room temperature: + _ EO, (g) + 2H,0(/) H,;0 (aq) + HEO, (aq) In which groups of the Periodic Table does element E probably lie? Enter the group labels below. For example, if E is probably in Group 1A (the alkali metals) or Group 8A (the noble gases), enter "1A, 8A" or the international group numbers "1, 18". 0 no