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Mendeleev (3)Still later, when more was known about atomic structure and electron configurations, we found out that those electron configurations could also be related to the shape of the periodic table. That provided more evidence for the structure of the periodic table being a legitimate arrangement. That also indicated that the chemical properties were related to the electron configuration. The importance of the electron configurations, combined with Meyer’s idea of different lengths of periods and the subgroups within the families, led to a change in the shape of the periodic table, giving us what we now call the Long Form of the Periodic Table. That is the form that is in most common use today. To see the change from the short form to the long form imagine the elements whose symbols are written to the left in each box of the short form being pulled en masse to the left and those written to the right in each box being pulled en masse to the right. Long Form of the Periodic Table
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Distance Learning questions Clackamas Community College |
