According to our definition, the atoms ability to attract electrons also increases. And generally speaking, according to our periodic trends, as we go up a group or across a period from left to right on our periodic table, the electrodegativity of the atoms increases. In other words, their ability to attract electrons increases. So, for example, let's take the second period. As we go from Lithium to Beryllium all the way to fluorine. The electronegativity of these atoms increases.