Atoms of group 1 elements have one electron in their outer shell, and atoms of group 2 elements have two electrons in their outer shell. Elements in groups 6, 7 and 0 are non-metals. Atoms of ...
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Periodic table of elements quiz: How many elements can you name in 10 minutes?such as metals or gases, while also giving each individual element its own chemical symbol. In this periodic table of ...
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