- Why are there no elements with 5 or 8 nucleons?
- Why does Valence follow the progression 0, 1, 2, 3, +4/-4, -3, -2, -1, 0 -- This is also called the Law of Octaves?
- Why are all the Noble gases Inert?
- Why are there more neutrons than protons?
- Why is water a bi-polar molecule?
- Why does Carbon Dioxide behave similar to an inert gas?
- Why is Bismuth the last stable element?