On the contrary, whenever this guy gains electrons, the reaction for this guy is endothermic. Because this guy, the lithium in the neutral state is more stable than the anion than lithium minus one. And that's exactly what we mean by electron affinity. Now. Likewise, as we go from top to bottom on our group in group, on the period our electron affinity decreases. And that's because our atomic radius increases as we go from top to bottom.