Use the Periodic Table tool to investigate the electron configurations for each element in the second period. On a computer, you can hover over an element on the table to select it. On a mobile device, you can tap once to select an element. Once an element is selected, its electron configuration is displayed in the Quick Facts box at the top of the periodic table. Now starting with lithium, look at its electron configuration. Then look at all eight elements in the second period from lithium to neon (Ne). What do you notice about the change in the electron configuration as you go from left to right?