We need to be able to split the number of electrons an element has into these four layers.
For Aluminium, with the symbol Al, there are 13 protons and so we have 13 electrons. The nucleus is a solid core, and that core is covered by shells of electrons.Carbon-14 (C-14) dating of multiple samples of bone from 8 dinosaurs found in Texas, Alaska, Colorado, and Montana revealed that they are only 22,000 to 39,000 years old.Members of the Paleochronology group presented their findings at the 2012 Western Pacific Geophysics Meeting in Singapore, August 13-17, a conference of the American Geophysical Union (AGU) and the Asia Oceania Geosciences Society (AOGS).Finding the electron dot structure of an element is the first step to understanding how elements bond and form ions.This can be done with a degree of ease for the first 20 elements following several simple steps.Once the basics have been mastered as they are presented here, those two pages will add an extra level of understanding to this topic.These dot diagrams are made for neutral atoms, meaning atoms that have the same number of electrons as protons.For ALL OTHER shells, start at the top quarter and place one electron in each quarter, moving around clockwise until all the electrons for that shell are used up.Then proceed to the next shell until there are no electrons remaining. Note how the electron dot structure is repeating every eight elements.Of course the fourth shell can hold more than 2 electrons but we are limiting ourselves to the first 20 elements. Once we know the numbers of electrons in each layer, all we need do is draw them onto a basic picture of an atom like that at the start of the page.I will use Silicon as the example in the following steps.