Using the ideas of Mendeleev, how would the following elements be arranged from left to right? Argon, Fluorine, Magnesium, Potassium

From left to right across each row, elements are arranged by increasing atomic mass. Mendeleev discovered that if he placed eight elements in each row and then continued on to the next row, the columns of the table would contain elements with similar properties. He called the columns groups.Oct 20, 2020

Explanation:

the answer would be a

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