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In a group, elements have the same number of outer shell electrons, which corresponds to the group number. For example, elements in Group 1 have 1 outer shell electron, elements in Group 2 have 2 outer shell electrons, and so on. This pattern helps determine the reactivity and chemical properties of elements within the same group.

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Q: What is the pattern of outer shell electrons in a group?
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The yellow group is Group 16 on the periodic table, also known as the oxygen group. Elements in this group have 6 electrons in their outer shell.


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a lot