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In addition, groups may be idenitifed by the first element in each group-so the Group 16 elements is sometimes called the oxygen group. There is considerable confusion surrounding the Group labels.
Best Answer: All atoms are neutral. An oxygen atom is neutral. The oxygen molecule, O2 is neutral. The oxygen ion has taken on 2 additional electrons from another atom to become the O^-2 ion. Oxygen, from column 6 has 8 electrons, 2 in the first energy level[now that level is full] and 6 in the outer energy level.