And now let's try to do the negative. So we have the one S positive and the two P negative. So we flip the two P and we have the following depiction. Now we have a note or nodal plane symbolized by this black dash here. So we have the positive oneness interacts in an anti bonding fashion with the negative two P and we create this nodal plane which is once again simply our region where the electron density is zero. In other words, electrons will never will have a zero probability to be found in this region here.