STRUCTURE

=**Structure of Sodium**=


 * The atomic number: 11
 * The atomic weight: 22.98977 amu
 * The atomic mass: 23
 * The atomic radius: 227 pm (Van der Waals)
 * Protons: 11
 * Electrons: 11
 * Neutrons 12
 * Outside the nucleus are shells that contain electrons
 * 1st shell - can hold 2 electrons
 * 2nd shell - can hold 8 electrons
 * 3rd shell - can hold 18 electrons


 * [[image:atomic_structure.gif caption="http://www.chemicalelements.com"]] ||