So in order to write the electric configuration for this guy, we simply take away one electron from the highest energy level. So in this case, it would be one S, two two S, two two P, six. And we took out one electron from the three S, one orbital, so that that guy disappeared. Now, if we make this guy into an ion, right? Let's say we make it into BR plus ion, we take one electron away. That means we take it away from the highest energy level.