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How does the electronic configuration of an atom relates to its position (period and group) in the modern Periodic table ? |
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Answer» In the periodic table, elements are placed according to their electronic configuration. If an element has only one shell in its electronic configuration, it is placed in the first period. If the element has two shells then it is placed in the second period, and so on. Vertical columns in the periodic table are called groups. There are eighteen groups and in a group, all the elements have the same number of valence electrons. |
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