The 2nd electron to be removed from Al experiences repulsionHence, shouldn't it have a lower 2nd IE than Mg?
I have one and it is an Ozark Brand, a 12x12 and is supposed to be water resistantIt is for the most part, but where it is sewn together it does leak a little bitI got some water proofing spray that you use on tents and it workedI actually got two types of sprayI got one can from the local Wal-Mart and it didn't work very wellI went to the Sport and hunting store and bought some, it was at a higher cost, but it workedThe spray is for water proofing tentsI was also told that you can get a spray from the RV dealers that they use on Pop-up campers, I guess they don't leakSo that's another avenue to exploreJust for future information, insectisides used in or around the canopy, direct contact, can take the water Repellent, resistant away from the fabric.
This Site Might Help YouRE: What is the difference between water repellent, water resistant? I want to buy an instant pop up canapyI have already bought 2 but they are too smallOne we did not get wet when it rained hardThe other one we didThe material absorbed some of the water dripped on us from inside the canapy! I want to make sure my next one will repel the rain but I.
Two factors affect the ionization energyOne is the effective nuclear charge, while the second is the distance between the leaving electron and the nucleus, which is related to the energy sublevelThe effective nuclear charge combines the charge on the nucleus with the repulsion from inner electronsThe force of attraction between the nucleus and the leaving electron follows Coulomb's law and is inversely proportional to the distanceIonization energies in kJ/mol .1 2 3 Mg 738 1451 7733 Al578 1817 2745 Aluminum has a lower first ionization energy due to the fact that the leaving electron is coming from a higher energy sublevel, the 3p which means that less energy is required to remove it from the atomThe first electron that is removed from a Mg atom is coming from the 3s which is lower in energy and closer to the nucleus For the second electron that is removed from magnesium, the effective nuclear charge has increased due to the removal of one electronAluminum loses its second electron from the 3s as well, but the effective nuclear charge of Al is greater than for Mg, and so there is more force of attraction for the second electron of the Al atom, which results in a greater ionization energy.
