As we go across, our atomic radius decreases, and that means our denominator. Our R also increases. So we see that our cues increase, our Rs decrease. And whenever the denominator decreases, that means our force tends to increase. So not only does this increase in charge cause the force to go up, but also the decrease in the r of the atomic radius tends to increase our force. So therefore, as we go from left to right, our ionization energy also increases.