Atomic Structure

Atomic Structure

1. The shell structure is: 2,8,8,18,18,32

   • The Protons and Neutrons are all in the nucleus
     • The electrons are on the outer shells.
     • The number of electrons in the outer shell determines what group the element is in on the periodic table.
       • For example, Oxygen has 6 electrons in its outer shell which means it is in group 6. It also needs to gain 2 electrons to become stable. (To be stable it needs 8 electrons in its outer shell.
         • When reacting to gain electrons the Ion becomes negatively charged as its gaining electrons. As it is gaining 2. Its ionic symbol would be O2-

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