Chemistry, 22.04.2021 21:20 beauburgess1108

A 5-column table with 2 rows. Column 1 is labeled number of protons, with entries 20 and 9; column 2 is number of neutrons, with entries 20 and D; Column 3 is atomic number, with entries A and E; Column 4 is Mass Number, with entries B and 19, and Column 5 is Element (symbol) with entries C and F. Using the periodic table, complete the table to describe each atom. Type in your answers. I need help!

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A 5-column table with 2 rows. Column 1 is labeled number of protons, with entries 20 and 9; column 2...