Question

below the symbol, you may see the element name and the atomic mass, combined in the atoms nucleus. question 4 why do scientists group elements into rows and columns on the periodic t to organize them by atomic number and similar properties to make it easier to memorize their names to separate metals from nonmetals only to keep the table balanced by size question 5

Explanation:

The periodic table arranges elements by atomic number (in rows - periods) and groups elements with similar properties (in columns - groups). This organization helps in understanding trends and properties. Memorizing names is not the main purpose. Separating metals and non - metals is part of the property - based grouping but not the only reason. Balancing by size is not a valid reason for the row - column grouping.

Answer:

To organize them by atomic number and similar properties