So how has the periodic table been put together ... Any letters that follow will be lower case letters, for example, helium is He. Some element symbols are simple. For example, oxygen is O.Others ...

If an atom has 2 protons, that’s an atom of the element helium. If it has 7 protons, that’s nitrogen. But the logic of the periodic table also relies upon the number and organisation of electr ...

But from a helium perspective, it's been a very steep learning curve. Understanding what is the end application for this. One of the second-lightest elements on the periodic table. Obviously I ...