So I was teaching my friend about the Bohr models we do at school, because she was really behind on her homework (and never pays attention in class), and she couldn't understand anything I was saying (saying I was a terrible teacher, which I am XD), so I used Hetalia references to get her to remember. I wanted to post this just for fun.
Disclaimer: I do not own Hetalia
Think of Hungary, Austria, and Prussia.
Hungary will be the neutron, the part of the atom that has mass but no charge. Hungary is the neutron because, whether you agree or not, she's neutral with her romantic feelings about Austria and Prussia.
Austria is the proton, which has both mass and charge, and Prussia is the electron. Hungary feel positively towards Austria and negatively towards Prussia.
Since Hungary and Austria were married (the Austro-Hungarian Compromise), they lived in the same house, hence the nucleus, where the protons and neutrons are found.
Now think of the War of Austrian Succession. Imagine Prussia trying to invade Austria's vital regions, surrounding the house with his armies. But Austria has his own armies to ward off Prussia.
Now let's say Prussia came up with battle plans to invade Austria. His first plan was code named, "Operation Hydrogen". Hydrogen has 1 proton and 1 electron. Prussia was being overconfident and only sent one army to fight Austria. Austria though, had only one army to defend himself.
Now, an element isn't stable or "happy" when it's valence shell, or outermost electron shell isn't full. An atom has to give or take a certain amount of electrons to become stable.
So in "Operation Hydrogen," you could imagine Prussia succeeding in capturing Austria's vital regions and his army, meaning that the hydrogen atom gained an electron, giving the atom a negative charge. If Prussia didn't succeed, he lost his army to Austria, meaning that the hydrogen lost an electron, making it a positively charged atom.
Say Prussia lost in Operation Hydrogen. Now he made up a new plan called "Operation Helium". Helium has 2 electrons and 2 protons, and because the first valence shell can only hold 2 electrons, helium is happy. So that means Prussia sent in 2 armies to seize Austria's vital regions. Because Austria is surround on all sides of his house, Austria surrenders and Prussia seized his vital regions.
Prussia, now thinking that Austria is weakening, he wants to conquer more of Austria's land. So he came up with plans like "Operation Lithium" or "Operation Boron" and etc. each with a certain amount of armies he uses.
But after Operation Helium, Prussia has no more room outside of Austria's house, so he sets up more armies in on Austria's yard. The first electron shell can hold only two electrons. The second can hold up to eight. Meaning up to eight of Prussia's armies can fit in Austria's yard.
Prussia: "Suck it losers!"
Austria: "Prussia has invaded my vital regions!"
So this was basically how I explained it. I added the famous vital regions quote at the end. And if my friend finds this, YOU HAD BETTER REMEMBER THIS STUFF!
