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The vertical columns were called ------ ?Element with electronic configuration 2,8,8,2 is present in ---------- ? |
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Answer» In the Mendeleev periodic table, the vertical columns are called groups and the horizontal rows are called periods. Magnesium is the element with the electronic configuration of 2,8,2 as its atomic number is 12, since the atomic number is the sum of all the electrons present in the electronic configuration. |
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