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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.
B d. D. 2.____The atomic number of oxygen, 8, indicates that there are eight. a. protons in the nucleus of an oxygen atom. b. oxygen nuclides. c. neutrons outside the oxygen atom's nucleus. d. energy levels in the oxygen atom's nucleus.