Atomic Structure & Periodic Table

Atomic Structure & Periodic Table

1. Atomic Structure

   • atoms
     • Electrons
       • - charge electrons = protons moves around nucleus, inside atom, in electron shells shells are at fixed distance from nucleus inner shells always fill first
     • Nucleus
       • Protons
         • + charge Protons = electrons
       • Neutrons
         • neutral charge
     • atomic number
       • tells you how many protons there are
     • mass number
       • tells the total number of neotrons AND protons in the atom
     • elements
       • isotopes

2. Periodic Table