The y are orgnized by there atomic number and if you need more answers dont use wikipedia.com they dont have right answers and anyone can change the answers as they please so use a diffren site if you want a good grade on anything
The first group elements have 1 dot on their electron dot diagram, the group 2 elements have 2, group 3-12 elements have 2 electrons (with exceptions), group 13: 3 electrons, group 14: 4 electrons,...
The elements on the periodic table were created by stars through nuclear fusion. We use the term stellar nucleosynthesis to describe what stars are doing through fusion. Stars fuse hydrogen into...
Electron configuration is the arrangement of elements according to their increasing atomic numbers whiles period is the arrangement of elements according to the increasing number of valence electrons.